Truck-Mounted Drilling Rig ZJ40/2250/CZ Replacement Parts

1

Engine (Power System)

Model: CAT C16; Quantity: 2 Units; Power: 600 HP (448 kW) per unit at 2100 r/min

Cast iron (HT300) engine block, forged steel crankshaft, aluminum alloy cylinder heads, chrome-plated piston rings, nickel-alloy valve seats, turbocharged alloy steel housings

1. Piston ring wear from poor fuel quality or inadequate filtration; 2. Turbocharger failure from oil contamination or dual-engine synchronization issues; 3. Overheating from heavy load or cooling system blockage.

1. Use CAT-specified fuel (API CF-4 or higher) and engine oil; 2. Sync dual engines per OEM specs to avoid load imbalance; 3. Service every 500 operating hours per CAT maintenance guidelines.

2

Transmission

Model: ALLISON-S6610; Quantity: 2 Units

Alloy steel (4140) gears, aluminum alloy housing, ceramic-faced friction clutches, FKM high-pressure seals, hardened steel valve bodies, precision-machined synchronizers

1. Clutch wear from harsh shifting or dual-transmission misalignment; 2. Gear damage from torque spikes during heavy hoisting; 3. Valve sticking from hydraulic fluid contamination.

1. Shift smoothly and sync dual transmissions to reduce clutch wear; 2. Use Allison TES 295 ATF, replace every 1000 hours; 3. Maintain ISO 12103 Class 16/13 fluid cleanliness with OEM filters.

3

Emergency Power (Motor)

Compatible with ZJ40/2250/CZ rig (standard configuration)

High-strength steel frame, copper windings, cast iron motor housing, stainless steel (304) electrical connectors, sealed bearing assemblies, waterproof wiring harnesses

1. Electrical component corrosion from oilfield moisture; 2. Winding damage from voltage fluctuations; 3. Bearing wear from prolonged inactivity or insufficient lubrication.

1. Keep motor enclosure dry/dust-free; 2. Test monthly to ensure startup readiness; 3. Lubricate bearings every 200 hours with lithium-based grease, store with dust covers when unused.

1

Chassis

Driving Type: 14x10; Min. Turning Dia.: 42m (137.8ft); Min. Ground Clearance: 340mm (13.39in); Approach/Departure Angle: 36°/18°; Max. Grade Ability: 20°; Shipping Weight: 82000kg (180776lb)

High-strength alloy steel (Q690) frame, forged alloy steel axles, reinforced steel suspension beams, anti-corrosion epoxy coating, wear-resistant steel crossmembers

1. Frame deformation from uneven heavy loads; 2. Axle bearing wear from off-road operation; 3. Suspension fatigue from rough terrain and repeated load cycles.

1. Distribute load evenly during transport; 2. Inspect axles/suspension monthly for cracks/wear; 3. Clean chassis weekly to remove debris/chemical residue, touch up coating annually.

1

Drawworks

Type: Double drum (single drum optional); Power: 1000 HP; Speeds: 5 forward, 1 reverse; Sand Drum: Optional

High-strength alloy steel (Q690) frame, 20MnTiB carbon steel drums, heat-treated alloy steel gears, heavy-duty sealed roller bearings

1. Drum groove wear from high-load wire rope friction; 2. Gear fatigue from 1000 HP torque cycles; 3. Bearing damage from insufficient lubrication or debris.

1. Inspect drum grooves monthly per API 4F; 2. Use OEM-specified heavy-duty gear oil (ISO VG 680); 3. Avoid overloading beyond 2250kN max hookload.

2

Main Drum (Drawworks)

Dia. x Length: Ø635mm (25in) x 1254mm (49.4in); Main Brake: Hydraulic disc type; Cooling: None

Carbon steel (20MnTiB) drum body, hardened alloy steel brake discs, heat-resistant alloy steel components, anti-rust and anti-wear coating

1. Brake disc wear from frequent heavy braking (no cooling system); 2. Drum warping from uneven heat distribution; 3. Corrosion from well fluids or outdoor exposure.

1. Inspect brake discs weekly for wear (replace when thickness < 80% of OEM specs); 2. Avoid prolonged continuous braking to prevent overheating; 3. Clean drum surface after each drilling cycle.

3

Auxiliary Brake (Main Drum)

Model: WCB236 disc brake

Alloy steel (40CrNiMoA) brake body, hardened steel brake discs, FKM hydraulic seals, stainless steel (316) internal components

1. Brake disc wear from high-load auxiliary braking; 2. Seal leakage from hydraulic fluid contamination; 3. Internal component damage from debris buildup.

1. Inspect brake discs and seals monthly; 2. Filter hydraulic fluid to ISO 12103 Class 18/15; 3. Flush brake system quarterly to remove debris.

4

Drill Line

Dia.: Ø32mm (1-1/4in); Lines: 10

High-carbon steel wires (2160 MPa tensile strength), galvanized coating, independent wire rope core (IWRC), anti-wear and anti-corrosion surface treatment

1. Fatigue from repeated bending over sheaves under ultra-high load; 2. Abrasion from rig component contact; 3. Corrosion from oilfield moisture/chemicals.

1. Rotate rope biweekly to distribute wear (per API 9B); 2. Clean and lubricate weekly with high-load wire rope grease (NLGI 3); 3. Replace if broken wires exceed API limits (6 in a single lay).

5

Traveling Block

Model: YG225

Alloy steel (40CrNiMoA) sheaves, stainless steel (304) pins, anti-corrosion coated frame, ultra-high load roller bearings

1. Sheave groove wear from 10-line drill line friction; 2. Bearing failure from vibration or ultra-high load; 3. Frame corrosion from well fluids.

1. Align with crown block to reduce uneven wear; 2. Lubricate sheave bearings every 40 operating hours; 3. Inspect for cracks via NDT every 6 months (API 4F).

1

Mast

Type: JJ225/39-W; Height: 39m; Max. Static Load: 22500 kN; Monkey Board Height: 20.4m (66.9ft); Max. Wind Load: 59.35 kN (110 km/h)

High-strength alloy steel (Q690) sections, bolted/welded construction, anti-corrosion epoxy coating, reinforced stress points, high-tensile steel fasteners

1. Structural fatigue from ultra-high static load and wind pressure; 2. Corrosion from outdoor exposure; 3. Bolt loosening or shearing from rig vibration.

1. Inspect for cracks every 6 months via NDT (API 4F); 2. Retorque bolts weekly (torque per OEM specs); 3. Lower mast during wind speeds exceeding 110 km/h.

2

Substructure

Model: ZT3000/6.7-Z foldable substructure

Alloy steel (Q355B) frames, reinforced steel crossbeams, anti-corrosion coated surfaces, high-strength hinge pins, wear-resistant steel base plates

1. Fatigue from uneven ultra-high load distribution; 2. Corrosion from ground moisture/oilfield chemicals; 3. Hinge wear from frequent folding/unfolding.

1. Ensure level setup to distribute load evenly; 2. Inspect welds/hinges annually via NDT; 3. Apply anti-corrosion grease to hinges every 3 months.

1

Rotary Table

Model: ZP275

Alloy steel (4140) gears, cast iron housing, hardened steel tabletop, FKM high-pressure seals, precision-machined heavy-duty bearings

1. Gear wear from high drilling torque; 2. Tabletop damage from tubular contact or debris; 3. Seal leakage from high-pressure drilling fluid contamination.

1. Lubricate gears every 100 operating hours with heavy-duty gear oil (ISO VG 320); 2. Inspect tabletop for wear weekly; 3. Clean seals daily to prevent drilling fluid buildup.

2

Swivel

Model: SL225

Alloy steel (4340) body, stainless steel (316) rotating components, FKM high-pressure seals, heat-treated ultra-high load roller bearings

1. Seal leakage from ultra-high drilling fluid pressure; 2. Bearing wear from rotational friction under heavy load; 3. Corrosion from well fluids or moisture.

1. Test pressure integrity before each use (per API 7K); 2. Lubricate bearings every 75 operating hours with high-load grease; 3. Flush internal components after drilling.

1

Hydraulic System Components

Rated Pressure: 14 MPa (2002 psi)

Alloy steel (45#) hydraulic cylinders, FKM high-pressure seals, stainless steel (304) valves, thick-walled copper hydraulic lines, cast iron pump bodies

1. Seal leakage from pressure spikes or fluid contamination; 2. Valve clogging from debris; 3. Hydraulic line damage from impact or corrosion under heavy load.

1. Filter hydraulic fluid to ISO 12103 Class 18/15; 2. Inspect lines/seals monthly for damage; 3. Secure lines to prevent kinking/crushing during rig setup.

2

Air System Components

Rated Pressure: 0.833-0.93 MPa (119.12-133 psi)

Carbon steel (Q235B) air tanks, aluminum alloy valves, NBR seals, stainless steel (304) air lines, cast iron heavy-duty compressors

1. Seal leakage from pressure cycles; 2. Air tank corrosion from moisture; 3. Valve wear from frequent use or debris.

1. Drain moisture from air tanks daily; 2. Inspect seals/valves monthly; 3. Maintain pressure within rated range to prevent component stress.

3

Control/Lighting/Power System

Voltage: 24V/220V/380V (China)

Copper electrical wires, aluminum alloy junction boxes, stainless steel (304) connectors, impact-resistant plastic light fixtures, waterproof relays and switches

1. Wire damage from rig vibration or impact; 2. Connector corrosion from moisture; 3. Light fixture damage from debris or harsh weather.

1. Secure wires with heavy-duty cable ties to prevent vibration damage; 2. Apply anti-corrosion grease to connectors; 3. Install protective covers on outdoor fixtures.

How to maintain dual CAT C16 engines for ZJ40/2250/CZ?

Sync dual engines per OEM specs to avoid load imbalance. Use CAT-specified fuel (API CF-4) and engine oil, service every 500 operating hours. Monitor cooling systems and turbochargers monthly to prevent overheating or synchronization failure.

What’s the replacement interval for the ZJ40/2250/CZ’s drill line (Ø32mm, 10 lines)?

Replace per API 9B: if broken wires exceed 6 in a single lay or 10 in 300mm. For 4000m deep drilling, inspect weekly, rotate biweekly, and replace every 4–8 months (whichever comes first) to avoid ultra-high load failure.

How to resolve main brake overheating (no cooling system) on the drawworks?

Limit continuous braking to 5-minute intervals to allow heat dissipation. Inspect brake discs weekly for wear (replace at 80% OEM thickness). Avoid heavy braking during high-speed hoisting, and use the WCB236 auxiliary brake to share load.