Z04010500004AA Latch Pin Unit & Matching Parts Guide for ZJ40 Drilling Rig

1

Latch pin unit

Z04010500004AA

Alloy steel (4140), heat-treated for wear resistance, integrated locking mechanism, anti-corrosion coating

1. Wear of locking mechanism from repeated engagement; 2. Corrosion of moving parts from moisture; 3. Jamming due to debris ingress.

1. Lubricate locking mechanism monthly with high-temperature grease; 2. Clean regularly to remove debris; 3. Inspect engagement tightness before each operation.

2

Connection rod

Z04010501001AA

High-tensile alloy steel (Q355B), precision-machined for force transmission, zinc-plated

1. Tensile fatigue from repeated force cycles; 2. Wear at end connections; 3. Bending from misalignment during operation.

1. Ensure proper alignment with latch pin unit; 2. Inspect for bending or cracks quarterly; 3. Torque end connections to OE specifications.

3

Stopper

P1000025AA

Alloy steel (Q235B), hardened surface for impact resistance, anti-corrosion treatment

1. Impact damage from latch pin contact; 2. Wear from repeated positioning; 3. Corrosion from environmental exposure.

1. Inspect for deformation after each latch pin operation; 2. Replace if surface is severely worn; 3. Keep free of debris to ensure proper positioning.

1

Pad eye, lock pin

Z04010503003AA

Alloy steel (Q355B), forged, reinforced for lock pin load, API 7K compliant

1. Wear from lock pin friction; 2. Weld fatigue (if welded); 3. Corrosion from moisture or drilling fluid.

1. Lubricate lock pin contact area regularly; 2. Inspect welds quarterly per API 4F; 3. Clean off fluid to prevent corrosion.

2

Pad eye (multiple)

P6000251AA, P6000252AA, P2000035AA

Alloy steel (Q355B), forged for lifting/securing, galvanized for corrosion resistance

1. Fatigue from repeated load; 2. Wear at pin connection; 3. Corrosion from salt or humidity.

1. Never exceed rated load; 2. Inspect for cracks before use; 3. Replace galvanized coating if damaged.

3

Pin

4314508090

Stainless steel (304), precision-ground, corrosion-resistant for long-term use

1. Wear at bearing surfaces; 2. Corrosion from humid environments; 3. Bending from lateral force.

1. Lubricate with anti-corrosion grease; 2. Inspect for wear monthly; 3. Replace if bent or scratched.

4

Pin shaft

4314504040

Alloy steel (4140), heat-treated for rigidity, polished surface to reduce friction

1. Wear from rotational movement; 2. Corrosion from moisture; 3. Stress cracking from uneven load.

1. Lubricate bearings/sleeves monthly; 2. Inspect for cracks using non-destructive testing annually; 3. Ensure proper alignment during installation.

5

Washer 20

4313200020

Carbon steel (65Mn), heat-treated for elasticity, zinc-plated

1. Fatigue from repeated compression; 2. Corrosion from moisture; 3. Deformation from over-torquing.

1. Replace when re-torquing fasteners; 2. Use with compatible M20 bolts; 3. Store in dry areas to prevent rust.

6

Washer

P6000272AA

Carbon steel, precision-stamped, anti-wear surface treatment

1. Wear from bolt/nut friction; 2. Corrosion from environmental exposure; 3. Deformation from uneven pressure.

1. Match washer size to corresponding fasteners; 2. Inspect for flatness before installation; 3. Replace if bent or corroded.

7

Cotter pin 4X30

P2000050AA

Carbon steel (Q235B), zinc-plated, flexible for secure locking

1. Fatigue from repeated bending; 2. Corrosion from moisture; 3. Breakage from over-bending during installation.

1. Bend only at recommended points; 2. Replace after each removal; 3. Ensure full engagement in pin holes.

8

Cotter pin 8X90

4101800008

Carbon steel (Q235B), heavy-duty for larger pins, zinc-plated

1. Same as 4X30 cotter pin; 2. Additional stress from larger pin loads; 3. Wear from vibration.

1. Use only for compatible 8mm pins; 2. Avoid over-bending; 3. Inspect for wear during monthly maintenance.

9

Cotter pin 4X40

P9970189AA

Carbon steel (Q235B), longer length for deep pin holes, zinc-plated

1. Fatigue from bending; 2. Corrosion from moisture in deep pin holes; 3. Breakage from improper installation.

1. Cut excess length if needed (avoid over-trimming); 2. Apply anti-corrosion grease to pin holes; 3. Replace if bent or rusted.

10

Safety pin

P2000036AA

Carbon steel (Q235B), spring-loaded for secure fit, anti-corrosion coating

1. Wear from repeated insertion/removal; 2. Spring fatigue; 3. Corrosion from moisture.

1. Inspect spring function monthly; 2. Clean and dry after use; 3. Replace if pin fails to lock into place.

1

Oil cup M10X1

P9100024AA

Brass, precision-threaded for M10 connections, corrosion-resistant

1. Thread wear from repeated lubrication; 2. Corrosion from moisture; 3. Clogging from contaminated grease.

1. Use only clean, compatible lubricants; 2. Tighten gently to avoid thread damage; 3. Clean cup opening regularly to prevent clogging.

2

Chain 5 (L350)

P1100030AA

High-strength steel, heat-treated links, anti-rust coating

1. Link wear from repeated tension; 2. Corrosion from environmental exposure; 3. Damage from impact or overloading.

1. Avoid overloading beyond rated capacity; 2. Lubricate links every 50 operating hours; 3. Inspect for broken links monthly.

3

Overlap link

Z04010502006AA

Alloy steel, forged link for chain connection, heat-treated for strength

1. Wear from chain tension; 2. Corrosion from moisture; 3. Failure from improper chain alignment.

1. Ensure proper alignment with chain links; 2. Tighten to OE specs; 3. Replace if link is worn or bent.

4

Steel plate 40X16

Z04010900001AA

Alloy steel (Q355B), precision-cut, reinforced for structural support

1. Wear from component contact; 2. Corrosion from environmental exposure; 3. Bending from uneven pressure.

1. Inspect for bending during monthly checks; 2. Clean and apply anti-corrosion coating as needed; 3. Avoid using as a pry point.

Are these parts compatible only with the Z04010500004AA latch pin unit?

Yes, all parts are exclusively engineered for the Z04010500004AA latch pin unit of the ZJ40 truck-mounted drilling rig. They match OE specifications to ensure perfect fit and reliable locking performance, complying with API 4F standards.

How often should the latch pin unit be lubricated?

Lubricate the Z04010500004AA latch pin unit monthly via the M10X1 oil cup (P9100024AA) using high-temperature grease. For rigs in dusty/humid environments, shorten the interval to biweekly to prevent jamming.

When should cotter pins be replaced?

Replace cotter pins (all sizes) after each removal, as repeated bending causes fatigue and breakage. Inspect monthly for rust or wear, and replace immediately if damaged—critical for preventing fastener disengagement per API 7K safety requirements.