HHF-1300/1600 Crankshaft Assembly Parts

1

11-3161-0208-00

Crankshaft

High-strength alloy steel (4140) with heat treatment and precision grinding, hardened journals for wear resistance and high torque tolerance

1. Journal wear from insufficient lubrication or contaminated oil; 2. Fatigue cracks from uneven load distribution; 3. Bending deformation from excessive torque.

1. Use API GL-4 grade lubricants and replace every 500 operating hours; 2. Conduct monthly magnetic particle testing for hidden cracks; 3. Avoid overloading the pump beyond rated torque.

2

11-3131-0210, 11-3161-0210

Bull gear

Alloy steel (4340) with carburizing treatment, hardened gear teeth (58-62 HRC) for wear resistance and smooth power transfer

1. Gear tooth pitting or chipping from misalignment; 2. Abrasive wear from debris in lubricating oil; 3. Fatigue failure from repeated load cycles.

1. Align gears per manufacturer’s specs to ensure proper meshing; 2. Filter lubricating oil to remove abrasive particles; 3. Inspect teeth monthly for signs of wear or damage.

1

11-3131-0202, 11-3161-0202

Sleeve, main bearing (right)

Bearing steel (GCr15) with precision machining, case-hardened surface for wear resistance and corrosion protection

1. Abrasive wear from contaminated lubricant; 2. Seizure from insufficient oil flow; 3. Corrosion from moisture ingress.

1. Ensure adequate lubricant flow to bearing sleeves; 2. Clean lubrication lines regularly to remove debris; 3. Seal bearing housings to prevent moisture entry.

2

11-3131-0213, 11-3161-0213

Sleeve, main bearing (left)

Bearing steel (GCr15) with precision machining, case-hardened surface for wear resistance and corrosion protection

1. Abrasive wear from contaminated lubricant; 2. Seizure from insufficient oil flow; 3. Corrosion from moisture ingress.

1. Ensure adequate lubricant flow to bearing sleeves; 2. Clean lubrication lines regularly to remove debris; 3. Seal bearing housings to prevent moisture entry.

3

11-3131-0221-1, 11-3161-0221-2

Bearing, eccentric strap (928/660.4QU, 929/660.4QU)

High-carbon chromium bearing steel with brass cages, designed for heavy-load resistance and high rotational speeds

1. Cage damage from shock loads; 2. Rolling element wear from insufficient lubrication; 3. Contamination-induced scuffing.

1. Avoid sudden shock loads during pump startup; 2. Lubricate bearings with high-temperature grease before assembly; 3. Inspect bearings for debris before installation.

4

11-3131-0222-1, 11-3161-0222-2

Main bearing (3G4053160H, 3G3003760HY)

Rolling bearing steel with nitride treatment, double-row design for radial and axial load resistance

1. Fatigue failure from excessive radial loads; 2. Lubricant degradation at high temperatures; 3. Seal failure leading to contamination.

1. Monitor radial loads to avoid exceeding bearing ratings; 2. Maintain operating temperatures within 40-80°C; 3. Replace bearing seals annually or at first sign of leakage.

5

11-3161-0204

Insider retainer

Alloy steel (A36) with galvanized finish, designed to secure internal bearing components and prevent axial movement

1. Wear from axial bearing movement; 2. Corrosion from lubricant additives; 3. Loosening from operational vibrations.

1. Ensure proper fit during assembly to minimize axial movement; 2. Use lubricants compatible with galvanized steel; 3. Check retainer tightness monthly.

6

11-3131-0205-00, 11-3161-0205-00

Outside retainer

Alloy steel (A36) with galvanized finish, designed to secure external bearing components and prevent debris ingress

1. Impact damage from external debris; 2. Corrosion from outdoor exposure; 3. Fatigue from vibration-induced stress.

1. Install debris guards around retainers; 2. Clean and reapply anti-corrosive coating quarterly; 3. Inspect for cracks during routine maintenance.

7

11-3131-0214, 11-3161-0214

Retainer ring

Spring steel (65Mn) with heat treatment, designed for flexibility and secure retention of bearing components

1. Loss of elasticity from prolonged use; 2. Bending or deformation during assembly; 3. Corrosion from moisture in lubricant.

1. Avoid overstretching during installation; 2. Replace rings if elasticity is reduced; 3. Use moisture-inhibiting lubricants to prevent corrosion.

1

11-3131-0201-00, 11-3161-0201-00

Cover, main bearing

Carbon steel (A1011) with epoxy coating, designed to protect main bearings and prevent lubricant leakage

1. Coating damage from impact or debris; 2. Warping from uneven torque; 3. Gasket failure leading to oil leakage.

1. Torque fasteners evenly to avoid warping; 2. Install a protective barrier to prevent debris impact; 3. Replace gaskets with each cover removal.

2

11-3161-0203

Gasket

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

1. Creep deformation under prolonged pressure; 2. Damage from sharp edges on mating surfaces; 3. Degradation from incompatible lubricants.

1. Inspect mating surfaces for sharp edges before installation; 2. Avoid over-torquing to prevent creep; 3. Use lubricants compatible with PTFE.

3

11-3161-0207

Positioning ring (I)

Alloy steel (4140) with precision machining, designed to align crankshaft components and maintain axial clearance

1. Wear from axial component movement; 2. Deformation from excessive pressure; 3. Corrosion from lubricant contaminants.

1. Ensure proper axial clearance during assembly; 2. Avoid overloading to prevent excessive pressure; 3. Filter lubricants to remove contaminants.

4

11-3161-0209

Positioning ring (II)

Alloy steel (4140) with precision machining, designed to align crankshaft components and maintain axial clearance

1. Wear from axial component movement; 2. Deformation from excessive pressure; 3. Corrosion from lubricant contaminants.

1. Ensure proper axial clearance during assembly; 2. Avoid overloading to prevent excessive pressure; 3. Filter lubricants to remove contaminants.

5

11-3161-0212

Spacer ring

Stainless steel (304) with precision grinding, designed to maintain component spacing and alignment

1. Wear from rotational friction; 2. Corrosion from moisture or lubricant additives; 3. Deformation from uneven load distribution.

1. Ensure proper spacing during assembly to minimize friction; 2. Use corrosion-inhibiting lubricants; 3. Inspect for deformation during routine maintenance.

6

11-3161-0215

Baffle

Carbon steel (A36) with galvanized finish, designed to direct lubricant flow and prevent debris entry

1. Corrosion from lubricant contaminants; 2. Wear from lubricant flow erosion; 3. Impact damage from loose components.

1. Clean baffles during lubricant changes; 2. Ensure proper lubricant flow to reduce erosion; 3. Secure loose components to prevent impact.

7

11-3161-0226

Sealant

High-temperature silicone sealant, resistant to lubricants and designed for leak-proof sealing of crankshaft components

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

1. Apply sealant to clean, dry surfaces; 2. Avoid operating temperatures above 200°C; 3. Allow proper curing time before startup.

1

11-3131-0211-1, 11-3161-0211-2

Bolt, 1 1/2-8UN-2A*130 / 170

Alloy steel (Grade 10.9) with cadmium plating, high tensile strength for heavy-load fastening

1. Fatigue failure from vibration-induced stress; 2. Thread wear from repeated installation; 3. Plating damage leading to corrosion.

1. Torque to manufacturer’s specs (650-700 ft-lbs); 2. Use thread lubricant to reduce wear; 3. Replace bolts after 3 use cycles or if plating is damaged.

2

11-3161-0216

Bolt, main bearing, 3-8UN-3A

Alloy steel (Grade 12.9) with hot-dip galvanizing, extreme strength for securing main bearings

1. Thread stripping from over-torquing; 2. Corrosion from moisture ingress; 3. Fatigue from repeated load cycles.

1. Use a torque wrench to avoid over-torquing; 2. Apply anti-corrosive sealant to threads; 3. Inspect for fatigue cracks quarterly.

3

11-3161-0218

Screw, 5/8-11UNC-2A*120

Steel (Grade 8) with zinc plating, designed for medium-load fastening of crankshaft components

1. Head damage from improper tool use; 2. Thread wear from repeated installation; 3. Corrosion from outdoor exposure.

1. Use a socket wrench matching the screw head size; 2. Apply thread lubricant during installation; 3. Retighten monthly to counter vibration.

4

11-3161-0223

Screw, 5/8-11UNC-2A*100

Steel (Grade 8) with zinc plating, designed for medium-load fastening of crankshaft components

1. Head damage from improper tool use; 2. Thread wear from repeated installation; 3. Corrosion from outdoor exposure.

1. Use a socket wrench matching the screw head size; 2. Apply thread lubricant during installation; 3. Retighten monthly to counter vibration.

5

11-3161-0220

Bolt, 5/8-11UNC-2A*40

Steel (Grade 8) with zinc plating, designed for light to medium-load fastening

1. Corrosion from moisture and mud; 2. Bolt stretching from over-torquing; 3. Thread wear from vibration.

1. Torque to 35 ft-lbs (recommended value); 2. Apply anti-corrosive spray after installation; 3. Install lock washers to reduce vibration-induced wear.

6

11-3161-0227

Bolt, 5/8-11UNC-2A*50

Steel (Grade 8) with zinc plating, designed for light to medium-load fastening

1. Corrosion from moisture and mud; 2. Bolt stretching from over-torquing; 3. Thread wear from vibration.

1. Torque to 40 ft-lbs (recommended value); 2. Apply anti-corrosive spray after installation; 3. Install lock washers to reduce vibration-induced wear.

7

11-3161-0219-00

Locking nut, 1 1/2-8UN-2B

Alloy 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; 3. Loss of locking capability from over-torquing.

1. Replace nuts if the nylon insert loses elasticity; 2. Avoid over-torquing to preserve the locking feature; 3. Do not reuse nuts more than 3 times.

8

B0848-16-32

Flat washer, 16

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; 3. Misalignment causing uneven load distribution.

1. Replace washers when plating is worn; 2. Ensure washers are properly aligned with bolt heads; 3. Use washers matching bolt size to avoid deformation.

9

11-3161-0224

Locking wire, SZ-1.50

Stainless steel (304) with high tensile strength, designed to secure fasteners and prevent loosening

1. Fatigue failure from repeated vibration; 2. Corrosion from moisture; 3. Breakage from improper installation tension.

1. Apply proper tension during installation (not too tight/loose); 2. Inspect wires monthly for signs of fatigue; 3. Replace wires annually or if corrosion is present.

10

11-3161-0225

Locking wire, SZ-3.00

Stainless steel (304) with high tensile strength, designed to secure heavy-duty fasteners and prevent loosening

1. Fatigue failure from repeated vibration; 2. Corrosion from moisture; 3. Breakage from improper installation tension.

1. Apply proper tension during installation (not too tight/loose); 2. Inspect wires monthly for signs of fatigue; 3. Replace wires annually or if corrosion is present.

11

11-3161-0217

Shims

Stainless steel (301) with precise thickness, designed to adjust component clearance and alignment

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

1. Handle shims carefully to avoid bending; 2. Clean mounting surfaces before installation; 3. Use multiple thin shims instead of one thick shim for better alignment.

12

11-3131-0206, 11-3161-0206

Eccentric strap

Alloy steel (4140) with heat treatment, designed to secure eccentric components and transmit torque

1. Fatigue from repeated torque cycles; 2. Wear from contact with eccentric components; 3. Corrosion from lubricant contaminants.

1. Inspect for fatigue cracks bi-annually; 2. Ensure proper lubrication between strap and eccentric components; 3. Replace if wear exceeds 0.5mm.

How often should crankshaft assembly bearings be inspected and replaced?

Inspect main and eccentric strap bearings monthly for wear, noise, or temperature spikes. Replace bearings every 2,000 operating hours (or sooner if damage is detected) per ISO 281 guidelines. For harsh environments with excessive debris, inspect every 1,000 hours.

What torque specifications should be used for the 1 1/2-8UN-2A bolts?

Bolts (11-3131-0211-1/11-3161-0211-2) require a torque of 650-700 ft-lbs for proper fastening, per ASME B18.2.1 standards. Use a calibrated torque wrench and thread lubricant to ensure consistent torque and prevent thread wear or bolt failure.

How to prevent locking wire failure in the crankshaft assembly?

Use the correct wire size (SZ-1.50 for standard fasteners, SZ-3.00 for heavy-duty bolts), apply proper tension during installation (avoid over-tightening), and inspect wires monthly for fatigue or corrosion. Replace locking wire annually, even if no damage is visible, to maintain reliability.