HHF-1300/1600 Triplex Mud Pump Parts

1

11-3161-0100

Frame assembly

High-strength alloy steel (A514) with hot-dip galvanizing, reinforced welds for heavy-load resistance and corrosion protection

1. Structural fatigue from continuous high-pressure vibrations; 2. Corrosion from drilling mud and outdoor exposure.

1. Conduct bi-annual magnetic particle testing for hidden cracks; 2. Clean mud buildup monthly and reapply anti-corrosive coating quarterly.

2

11-3161-0200

Crankshaft assembly

Alloy steel (4140) with heat treatment, precision-machined journals for smooth rotation and high tensile strength

1. Journal wear from insufficient lubrication or contaminated oil; 2. Fatigue cracks from uneven load distribution.

1. Use industrial-grade lubricants meeting API GL-4 standards; 2. Replace lubricating oil every 500 operating hours and filter debris regularly.

3

11-3161-0300

Pinion shaft assembly

Alloy steel (4340) with carburizing treatment, hardened gear teeth for wear resistance and torque transmission

1. Gear tooth wear from misalignment or abrasive debris in oil; 2. Bearing damage from excessive axial load.

1. Align shafts precisely per manufacturer’s specs before operation; 2. Inspect gear teeth monthly for pitting or chipping.

4

11-3161-0400

Crosshead assembly

Alloy steel (A36) body with bronze bushings, designed for smooth reciprocating motion in high-pressure conditions

1. Bushing wear from inadequate lubrication; 2. Scoring on the piston rod contact surface from contamination.

1. Lubricate bushings with high-temperature grease weekly; 2. Clean the piston rod surface before assembly to remove debris.

1

11-3161-0500

Fluid end assembly

Stainless steel (316L) with hardened internal surfaces, resistant to corrosion and abrasive mud particles

1. Internal wear from high-velocity abrasive mud; 2. Gasket failure leading to fluid leakage under high pressure.

1. Filter mud to remove large abrasive particles; 2. Inspect gaskets before each use and replace if compressed or cracked.

2

11-3161-0800

Liner spraying assembly

Carbide-coated steel liner with a steel housing, designed to resist extreme wear from abrasive drilling mud

1. Coating wear from prolonged contact with high-abrasive mud; 2. Thermal stress cracking from rapid temperature changes.

1. Avoid sudden temperature fluctuations in mud; 2. Rotate liners periodically to ensure even wear distribution.

3

11-3161-1510

Pressure gauge, 0～60MPa（0～8700psi）

Stainless steel (304) case, brass internal components, and tempered glass lens for high-pressure accuracy

1. Diaphragm damage from pressure spikes; 2. Lens fogging or corrosion from mud and moisture ingress.

1. Install a pressure relief valve to prevent spikes exceeding 60MPa; 2. Seal the gauge housing with waterproof tape to block moisture.

4

11-3161-2200

Elbow assembly

Carbon steel (A105) with epoxy coating, designed for high-pressure mud flow and minimal flow resistance

1. Internal erosion from high-velocity mud particles; 2. Weld joint corrosion from chemical mud additives.

1. Position elbows to minimize flow turbulence; 2. Apply anti-corrosive coating to weld joints quarterly.

5

11-3161-1511

Pipe plug, R1 1/2

Brass (C36000) with NPT threads, designed for leak-proof sealing in fluid end openings

1. Thread wear from repeated installation/removal; 2. Corrosion from acidic mud or moisture.

1. Use thread sealant during installation to reduce wear; 2. Remove and clean plugs monthly to prevent corrosion buildup.

6

11-3161-2400

Draining filter assembly

Stainless steel (316) filter housing, cellulose filter element for debris removal from mud

1. Filter clogging from excessive debris; 2. Housing corrosion from chemical mud components.

1. Replace filter elements every 100 operating hours; 2. Flush the housing with clean water after each filter change.

7

11-3161-25

Flange 5 1/8*35

Carbon steel (A105) with galvanized finish, rated for high-pressure mud line connections

1. Bolt hole wear from repeated torque application; 2. Gasket seating surface corrosion.

1. Torque bolts evenly per API standards to avoid uneven wear; 2. Clean the seating surface before installing new gaskets.

8

11-3161-2700

Surge damper KB-75

Steel (A36) housing, nitrile rubber bladder, designed to absorb pressure surges in mud lines

1. Bladder degradation from chemical mud exposure; 2. Housing corrosion from outdoor elements.

1. Use mud additives compatible with nitrile rubber; 2. Inspect the bladder monthly for cracks or leaks.

9

11-3161-2800

Relieve valve JA-3

Stainless steel (304) body, brass valve seat, designed to release excess pressure and protect the pump

1. Valve seat wear from repeated pressure relief cycles; 2. Debris buildup preventing proper sealing.

1. Test the valve weekly to ensure it triggers at the set pressure; 2. Clean the valve seat and internals monthly to remove debris.

1

11-3161-0600

Power end lubrication assembly

Aluminum (6061) reservoir, steel lines, and brass fittings, designed for reliable lubricant distribution

1. Line clogging from oil sludge buildup; 2. Fitting leaks from vibration-induced loosening.

1. Replace lubricating oil per maintenance schedule; 2. Check fitting tightness weekly and retorque if needed.

2

11-3161-1000

Breather cap

Plastic (nylon 6/6) with a foam filter, designed to vent the lubrication reservoir and prevent debris ingress

1. Filter clogging from dust and debris; 2. Cap cracking from impact or extreme temperatures.

1. Clean or replace the foam filter monthly; 2. Install a protective guard to prevent impact damage.

3

11-3161-1700

Oil level gauge

Tempered glass tube with steel fittings, designed to monitor lubricant levels in the power end

1. Glass breakage from impact; 2. Fitting leaks from vibration or improper installation.

1. Handle the gauge carefully during maintenance; 2. Ensure fittings are tightened evenly to prevent leaks.

4

11-3161-1508

Rubber, 40*10*5800

Nitrile rubber (NBR) with high oil resistance, designed for sealing or vibration damping in lubrication systems

1. Material degradation from high temperatures or incompatible oils; 2. Cracking from prolonged vibration.

1. Use oils compatible with NBR rubber; 2. Inspect for cracks monthly and replace if signs of wear appear.

1

11-3161-0700

Skid

Carbon steel (A36) with reinforced base plates, galvanized finish for corrosion resistance and easy relocation

1. Base plate wear from dragging during relocation; 2. Corrosion from ground moisture and mud.

1. Use rated lifting slings instead of dragging during movement; 2. Clean mud from the base plate weekly and touch up anti-corrosive coating.

2

11-3161-1200

Trolley

Steel (A36) frame with cast iron wheels, designed for easy movement of the pump or heavy components

1. Wheel wear from rough job site surfaces; 2. Frame corrosion from outdoor exposure.

1. Clear debris from job site paths before moving the trolley; 2. Lubricate wheel bearings monthly and apply anti-corrosive spray to the frame.

3

11-3161-1300

Crane frame

High-strength alloy steel (A514) with welded joints, rated for lifting heavy pump components during maintenance

1. Weld joint fatigue from overloading; 2. Corrosion from outdoor elements and drilling mud.

1. Never exceed the frame’s rated lifting capacity; 2. Inspect weld joints bi-annually for cracks and re-coat with anti-corrosive paint.

4

11-3161-09

Inspection cover

Carbon steel (A1011) with galvanized finish, designed to protect internal components and allow easy inspection

1. Surface corrosion from mud and moisture; 2. Warping from improper torque during installation.

1. Clean the cover after each inspection; 2. Torque bolts evenly to avoid warping the cover surface.

5

11-3161-1400

Cover plate

Carbon steel (A1011) with epoxy coating, designed to seal and protect the pump’s internal cavities

1. Coating damage from impact or debris; 2. Gasket groove wear from repeated cover removal.

1. Install a protective barrier around the plate to prevent debris impact; 2. Inspect the gasket groove for wear during each removal.

6

11-3161-1800

Clean out cover

Carbon steel (A1011) with galvanized finish, designed for easy access to clean internal pump cavities

1. Corrosion from mud and moisture inside the pump; 2. Thread wear from repeated opening and closing.

1. Clean and dry the cover after each use; 2. Apply thread lubricant during installation to reduce wear.

7

11-3161-20

Cover, crosshead hole

Carbon steel (A1011) with anti-corrosive coating, designed to protect crosshead components from debris

1. Coating wear from crosshead vibration; 2. Damage from tools during maintenance.

1. Check for loose fit monthly and retighten if needed; 2. Use care when working near the cover to avoid tool impact.

8

11-3161-3400

Cover plate assembly

Carbon steel (A1011) with reinforced edges, designed for heavy-duty protection of critical pump components

1. Edge damage from impact or heavy loads; 2. Corrosion from prolonged exposure to drilling mud.

1. Avoid placing heavy tools or equipment on the plate; 2. Clean mud from the plate weekly and reapply anti-corrosive coating as needed.

9

11-3161-11

Nameplate

Stainless steel (304) with etched markings, resistant to corrosion and fading for long-term identification

1. Marking fading from chemical exposure; 2. Surface scratches from debris or tools.

1. Clean the nameplate with mild detergent to avoid chemical damage; 2. Install a protective film over the surface to prevent scratches.

10

11-3161-31

Shim

Stainless steel (301) with precise thickness, designed for adjusting component alignment and clearance

1. Bending from improper installation; 2. Corrosion from moisture or mud ingress.

1. Handle shims carefully to avoid bending during installation; 2. Clean the mounting surface before placing the shim to prevent corrosion.

1

11-3161-15

Gasket

Nitrile rubber (NBR) with fiber reinforcement, designed for leak-proof sealing in low-pressure applications

1. Material degradation from oil or chemical exposure; 2. Compression set from over-torquing.

1. Use gaskets compatible with the pump’s fluids; 2. Torque fasteners to the manufacturer’s recommended value.

2

11-3161-19

Gasket

Neoprene rubber with steel core, designed for high-pressure sealing between pump components

1. Core separation from extreme pressure; 2. Deterioration from high temperatures.

1. Replace gaskets after each disassembly; 2. Avoid operating the pump beyond recommended temperature limits.

3

11-3161-23

Gasket

PTFE (Teflon) with glass fiber reinforcement, designed for chemical resistance and high-pressure sealing

1. Creep deformation under prolonged pressure; 2. Damage from sharp edges during installation.

1. Inspect mating surfaces for sharp edges before installation; 2. Avoid over-torquing to prevent creep.

4

11-3161-23

Gasket, R44

PTFE (Teflon) with glass fiber reinforcement, designed for chemical resistance and high-pressure sealing

1. Creep deformation under prolonged pressure; 2. Damage from sharp edges during installation.

1. Inspect mating surfaces for sharp edges before installation; 2. Avoid over-torquing to prevent creep.

5

11-3161-1501

Bolt, 1/2-13UNC-2A*30

Steel (Grade 8) with zinc plating, designed for high tensile strength and corrosion resistance

1. Thread wear from repeated installation; 2. Zinc coating damage leading to corrosion.

1. Use thread lubricant during installation; 2. Avoid using damaged tools that scratch the zinc coating.

6

11-3161-1502

Bolt, 1/2-13UNC-2A*35

Steel (Grade 8) with zinc plating, designed for secure component fastening in medium-load applications

1. Bolt stretching from over-torquing; 2. Corrosion from moisture and mud.

1. Torque to 35 ft-lbs (recommended value); 2. Apply anti-corrosive spray after installation in wet environments.

7

11-3161-1503

Bolt, 5/8-11UNC-2A*45

Steel (Grade 9) with cadmium plating, high-strength for heavy-load component fastening

1. Thread stripping from excessive torque; 2. Plating wear from vibration-induced friction.

1. Use a torque wrench to avoid over-torquing; 2. Install lock washers to reduce vibration-induced friction.

8

11-3161-1504

Bolt, 1-8UNC-2A*90

Steel (Grade 10.9) with hot-dip galvanizing, designed for extreme load-bearing applications

1. Fatigue failure from repeated pressure cycles; 2. Corrosion at thread roots.

1. Inspect bolts for fatigue cracks quarterly; 2. Use thread sealant to prevent moisture ingress.

9

11-3161-1506

Bolt, 5/8-11UNC-2A*60

Steel (Grade 9) with zinc plating, designed for secure mounting of heavy pump components

1. Bolt head damage from improper tool use; 2. Corrosion from outdoor exposure.

1. Use a socket wrench matching the bolt head size; 2. Retighten bolts monthly to counter vibration-induced loosening.

10

11-3161-1505

Nut, 1-8UNC-2B（SPL）

Steel (Grade 10) with nylon insert, self-locking design for vibration resistance

1. Nylon insert degradation from high temperatures; 2. Thread wear from repeated use.

1. Replace nuts if the nylon insert loses elasticity; 2. Avoid reusing nuts more than 3 times.

11

11-3161-1507

Nut , 5/8-11UNC-2B（SPL）

Steel (Grade 9) with nylon insert, self-locking for secure component fastening

1. Thread damage from cross-threading; 2. Nylon insert wear from repeated installation.

1. Align threads properly before tightening; 2. Replace nuts when the self-locking feature weakens.

12

11-3161-1509

Screw, 8（0.164）-32UNC-2A*16

Steel (Grade 5) with zinc plating, designed for light-load fastening of covers and panels

1. Thread stripping from over-torquing; 2. Head damage from improper tool use.

1. Torque to 5 ft-lbs (recommended value); 2. Use a Phillips-head screwdriver matching the screw size.

13

B0848-14-32

Flat washer 14

Steel (A36) with zinc plating, designed to distribute bolt pressure and prevent surface damage

1. Plating wear leading to corrosion; 2. Deformation from excessive pressure.

1. Replace washers when plating is worn; 2. Ensure washers are properly aligned with bolt heads.

14

B0848-16-32

Flat washer 16

Steel (A36) with zinc plating, designed to protect component surfaces from bolt pressure

1. Corrosion from moisture and mud; 2. Bending from uneven torque application.

1. Clean washers before installation; 2. Torque bolts evenly to prevent washer bending.

15

B0093-27-59

Spring washer, 27

Steel (65Mn) with heat treatment, designed to prevent bolt loosening from vibration

1. Fatigue failure from repeated vibration; 2. Deformation from over-torquing.

1. Replace spring washers annually or if flattened; 2. Do not stack washers, as this reduces effectiveness.

16

B0093-16-59

Spring washer, 16

Steel (65Mn) with heat treatment, self-locking for light to medium-load applications

1. Loss of elasticity from prolonged use; 2. Corrosion from moisture ingress.

1. Inspect washers for elasticity monthly; 2. Apply anti-corrosive grease to washers in wet environments.

17

B0827-003-10-73

Rivet, 3*10

Aluminum (6061) with smooth finish, designed for permanent fastening of light components

1. Shear failure from vibration; 2. Corrosion from outdoor exposure.

1. Use rivets only for non-load-bearing applications; 2. Install rivets with the proper tool to ensure full setting.

How often should lubricating oil be replaced in the HHF-1300/1600 mud pump?

Lubricating oil in the power end lubrication assembly (11-3161-0600) should be replaced every 500 operating hours, per manufacturer and API GL-4 standards. For harsh environments with excessive debris, replace every 300 hours to prevent gear and bearing wear.

What is the best way to prevent gasket failure in the fluid end assembly?

To prevent gasket failure, use compatible gaskets (e.g., PTFE for chemical mud, NBR for oil-based mud), ensure mating surfaces are clean and smooth, and torque bolts evenly to the recommended value. Replace gaskets after each disassembly to avoid compression set.

Can non-original fasteners be used for the HHF-1300/1600 mud pump?

No. Non-original fasteners may not meet Grade 8/9/10 strength standards, leading to bolt failure under high pressure and vibration. Original fasteners are engineered for exact compatibility, ensuring structural integrity and compliance with industrial safety standards.