HHF-1300/1600 Power End Lubricating Assembly Parts

1

11-3161-0602-00

Gear oil pump (1 pc)

Cast iron (GG25) pump body with steel gears, designed for high-efficiency lubricant circulation and compatibility with industrial gear oils

1. Gear wear from unfiltered debris in oil; 2. Seal degradation from lubricant contamination; 3. Bearing failure from insufficient oil supply.

1. Replace oil filter regularly (per 250 operating hours); 2. Use ISO 6743-GB standard gear oil; 3. Inspect pump pressure monthly (target: 0.3-0.8MPa).

2

11-3161-0635

Gear oil pump, 2S (1 pc)

Cast iron (GG25) pump body with hardened steel gears, compact design for auxiliary lubricant circulation

1. Cavitation from low oil levels; 2. Gear scoring from abrasive contaminants; 3. Shaft seal leakage from oil degradation.

1. Maintain oil levels at recommended marks; 2. Drain and replace lubricant every 1,000 operating hours; 3. Clean inlet strainer weekly.

3

11-3161-0628-00

Oil filter (1 pc)

Steel housing with cellulose filter media, rated for 10μm particle retention to remove debris from lubricating oil

1. Clogging from excessive debris; 2. Filter media degradation from oil oxidation; 3. Housing corrosion from moisture ingress.

1. Replace every 250 operating hours or when pressure drop exceeds 0.2MPa; 2. Inspect housing for corrosion annually; 3. Use compatible filter media for gear oil.

4

11-3161-0634

Overflow valve (1 pc)

Stainless steel (304) valve body with brass internal components, designed to regulate lubrication system pressure (0-1.6MPa)

1. Valve sticking from debris buildup; 2. Seat wear from repeated pressure cycling; 3. Spring fatigue from prolonged use.

1. Test monthly for proper pressure relief (set to 1.2MPa); 2. Flush valve to remove debris; 3. Replace internal springs every 2,000 operating hours.

1

11-3161-0603, 11-3161-0605, 11-3161-0606, 11-3161-0607, 11-3161-0612, 11-3161-0620, 11-3161-0622, 11-3161-0626, 11-3161-0627, 11-3161-0631

Pipe joints (90°/45°), straight joints, straight pipes (various sizes: total 36 pcs)

Brass (C36000) with precision threading, corrosion-resistant and compatible with lubricating oils

1. Thread wear from repeated assembly; 2. Leakage from improper sealing; 3. Corrosion from moisture and oil additives.

1. Apply thread sealant (11-3161-0637) during installation; 2. Torque to 15-25 ft-lbs based on size; 3. Inspect for leaks monthly.

2

B1527-08-00-0305, B1527-16-00-0686, B1527-16-00-0331, B1527-10-00-0838, B1527-12-00-0305, B1527-08-00-0762, B1527-08-00-0508, B1527-08-00-0915, B1527-08-00-1194, B1527-08-00-1016, B1527-12-00-0610, B1527-08-00-0813, B1527-10-00-1956, B1527-08-00-1956, B1527-08-00-2311, B1527-08-00-1600, B1527-08-00-1245

Copper pipes (Φ8, Φ10, Φ12, Φ16; various lengths: total 21 pcs)

Copper (C12200) seamless tubing, ductile, corrosion-resistant, and ideal for low-pressure lubricant transfer

1. Kinking from improper bending during installation; 2. Corrosion from external moisture; 3. Clogging from oil sludge buildup.

1. Use pipe benders to avoid kinking; 2. Secure pipes with clamps to prevent vibration damage; 3. Flush pipes during oil changes to remove sludge.

1

11-3161-0611-00

Pipe clamp (I) (2 pcs)

Carbon steel (A36) with zinc plating, designed to secure large-diameter lubrication pipes

1. Corrosion from outdoor exposure; 2. Wear from pipe vibration; 3. Deformation from over-tightening.

1. Reapply anti-corrosive coating quarterly; 2. Tighten to secure pipes without restricting movement; 3. Inspect for deformation monthly.

2

11-3161-0613-00

Pipe clamp Φ8 (10 pcs)

Carbon steel (A36) with zinc plating, specialized for Φ8 copper pipes in lubrication systems

1. Plating wear leading to corrosion; 2. Breakage from excessive vibration; 3. Misalignment causing pipe stress.

1. Space clamps every 30cm for optimal support; 2. Replace if plating is worn; 3. Use rubber inserts to reduce vibration transfer.

3

11-3161-0617-00

Pipe clamp Φ12 (2 pcs)

Carbon steel (A36) with zinc plating, specialized for Φ12 copper pipes in lubrication systems

1. Corrosion from moisture; 2. Wear from pipe movement; 3. Bolt loosening from pump vibration.

1. Torque clamp bolts to 8 ft-lbs; 2. Inspect tightness monthly; 3. Apply anti-corrosive spray to clamp surfaces.

4

11-3161-0621-00

Double pipe clamp Φ8 (3 pcs)

Carbon steel (A36) with zinc plating, designed to secure two Φ8 pipes simultaneously

1. Uneven clamping force causing pipe damage; 2. Corrosion from external exposure; 3. Breakage from excessive load.

1. Tighten evenly to avoid pipe distortion; 2. Mount on stable surfaces to reduce vibration; 3. Replace if cracks are detected.

1

11-3161-0604, 11-3161-0633

Bolt, hollow (2 pcs); Bolt, 1/4-20UNC-2A*20 (4 pcs)

Steel (Grade 8) with zinc plating, medium-strength for securing pump and filter components

1. Thread wear from vibration; 2. Corrosion from moisture and oil; 3. Shear failure from over-torquing.

1. Torque to 10-15 ft-lbs based on size; 2. Apply thread lock to prevent loosening; 3. Replace if threads are damaged.

2

11-3161-0632

Screw, 5/16-18UNC-2A*40 (4 pcs)

Steel (Grade 8) with zinc plating, designed for mounting pipe clamps and auxiliary components

1. Corrosion from external exposure; 2. Thread stripping from over-tightening; 3. Fatigue from pump vibration.

1. Torque to 12 ft-lbs; 2. Use washers to distribute clamping force; 3. Inspect tightness monthly.

3

11-3161-0608, 11-3161-0616, 11-3161-0629, 11-3161-0630

Nuts (1/2-20UNF-2B:24 pcs; 5/8-16UN-2B:4 pcs; 11/16-16UN-2B:4 pcs; 15/16-16UN-2B:4 pcs)

Steel (Grade 10) with zinc plating, compatible with corresponding bolts/screws for secure fastening

1. Thread wear from repeated assembly; 2. Corrosion from moisture; 3. Loss of clamping force from vibration.

1. Replace nuts if threads are worn; 2. Torque to match corresponding fasteners; 3. Apply anti-corrosive sealant to threads.

4

11-3161-0623, B0093-08-59, B0093-06-59

Washers (various sizes: total 9 pcs)

Steel (A36) with zinc plating, designed to distribute clamping force and prevent thread damage

1. Plating wear leading to corrosion; 2. Deformation from excessive pressure; 3. Misalignment causing uneven load.

1. Use washers matching fastener size; 2. Replace if plating is worn or deformation is detected; 3. Ensure proper alignment with bolts.

1

11-3161-0637

Sealant (As required)

High-temperature, oil-resistant silicone sealant, formulated for lubrication system thread and flange sealing

1. Degradation from high operating temperatures; 2. Loss of adhesion from contaminated surfaces; 3. Cracking from thermal cycling.

1. Apply to clean, dry surfaces; 2. Allow 24-hour curing before startup; 3. Avoid exposure to temperatures above 200°C.

2

11-3161-0618

Gasket (2 pcs)

PTFE (Teflon) with fiber reinforcement, oil-resistant and designed for low-pressure sealing in lubrication systems

1. Compression set from prolonged pressure; 2. Damage from sharp mating surfaces; 3. Degradation from oil additives.

1. Replace with each disassembly; 2. Inspect mating surfaces for sharp edges; 3. Avoid over-torquing to prevent damage.

3

11-3161-0636

Pressure gauge 0～1.6MPa(0～230PSi) (1 pc)

Stainless steel (316) case with brass internal components, shock-resistant for lubrication system pressure monitoring

1. Inaccuracy from pressure spikes; 2. Internal corrosion from moisture; 3. Lens fogging from oil vapor ingress.

1. Calibrate annually per ASME B40.100; 2. Install a snubber to reduce pressure spikes; 3. Seal gauge connections to prevent vapor entry.

4

11-3161-0609, 11-3161-0615, 11-3161-0625-00

Seat (II), Seat (I), Seat (total 3 pcs)

Brass with PTFE sealing surfaces, designed to create leak-proof seals for gauges, valves, and pipe joints

1. Wear from repeated component removal; 2. Corrosion from oil and moisture; 3. Seal degradation from high temperatures.

1. Replace seats when removing gauges/valves; 2. Apply thread sealant to seat threads; 3. Avoid over-tightening.

5

11-3161-0614

Pipe plug, NPT 1/4 (5 pcs)

Brass (C36000) with precision threading, designed to seal pipe openings for maintenance and oil drainage

1. Thread wear from repeated removal; 2. Corrosion from oil and moisture; 3. Leakage from improper sealing.

1. Apply thread sealant during installation; 2. Torque to 10 ft-lbs; 3. Replace if threads are damaged.

6

11-3161-0601

Key, 3/16*3/16*25.4 (1 pc)

Steel (4140) with heat treatment, designed to transmit torque between the gear oil pump and drive shaft

1. Wear from torque transmission; 2. Shear failure from overload; 3. Corrosion from oil contamination.

1. Inspect for wear during pump maintenance; 2. Ensure proper fit in keyways; 3. Use clean, filtered oil to prevent contamination.

7

11-3161-0619

Nozzle (2 pcs)

Brass (C36000) with precision-drilled orifices, designed to direct lubricant to critical power end components

1. Clogging from oil sludge and debris; 2. Wear from high-velocity oil flow; 3. Corrosion from oil additives.

1. Clean nozzles during oil changes; 2. Replace if orifices are worn or clogged; 3. Use ISO 6743-GB standard gear oil.

8

11-3161-0624-00

Shim set (1 pc)

Stainless steel (301) with precise thicknesses, designed to adjust gear oil pump alignment and clearance

1. Bending from improper installation; 2. Corrosion from moisture; 3. Wear from component movement.

1. Handle carefully to avoid bending; 2. Use appropriate shim thickness for alignment; 3. Store unused shims in a dry environment.

What lubricant grade is recommended for the HHF-1300/1600 power end lubricating assembly?

Use ISO 6743-GB standard gear oil (VG 150 or VG 220) for optimal performance. This grade resists oxidation, maintains viscosity at operating temperatures (40-80°C), and provides sufficient lubrication for gears and bearings, complying with API 8C requirements.

How often should the oil filter and lubricant be replaced in the system?

Replace the oil filter (11-3161-0628-00) every 250 operating hours or when pressure drop exceeds 0.2MPa. Drain and replace lubricant every 1,000 operating hours; reduce to 750 hours for harsh, dusty drilling environments to prevent sludge buildup.

How to resolve low pressure in the power end lubrication system?

First, check for clogged filters/nozzles or low oil levels. Clean or replace filters/nozzles, and top up oil to recommended levels. If pressure remains low, inspect the overflow valve (11-3161-0634) for sticking or spring fatigue, and test pump output to ensure it meets 0.3-0.8MPa specifications.