Truck-Mounted Drilling Rig ZJ20/1470CZ Replacement Parts

1

Engine (Power System)

Model: CAT3412; Power: 650 HP (485 kW) at 2100 r/min

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

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

1. Use CAT-specified fuel (API CF-4 or higher) and engine oil; 2. Inspect/clean cooling system monthly; 3. Service per CAT maintenance schedule (every 500 operating hours).

2

Transmission

Model: ALLISON-S6610HR

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

1. Clutch wear from harsh shifting or overloading; 2. Gear damage from torque spikes during hoisting; 3. Valve sticking from hydraulic fluid contamination.

1. Shift smoothly to reduce clutch wear; 2. Replace transmission fluid every 1000 hours with Allison TES 295 ATF; 3. Use OEM filters to maintain ISO 12103 Class 16/13 fluid cleanliness.

3

Emergency Power (Motor)

Optional; Compatible with ZJ20/1470CZ rig

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

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

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

1

Chassis

Driving Type: 12x8; Min. Turning Dia.: 36m (118.11ft); Min. Ground Clearance: 340mm (13.39in); Approach/Departure Angle: 36°/18°; Max. Grade Ability: 20°; Shipping Weight: 56000kg (123456.8lb)

High-strength alloy steel (Q460) frame, forged alloy steel axles, reinforced steel suspension beams, anti-corrosion epoxy coating

1. Frame corrosion from oilfield chemicals/debris; 2. Axle bearing wear from off-road operation; 3. Suspension fatigue from uneven load distribution.

1. Clean chassis weekly to remove debris/chemical residue; 2. Inspect axles/suspension monthly for cracks/wear; 3. Avoid overloading beyond rated shipping weight.

1

Drawworks

Type: Double drum (single drum optional); Power: 650 HP; Speeds: 5 forward, 1 reverse; Sand Drum: Optional

High-strength alloy steel (Q460) frame, 16Mn carbon steel drums, heat-treated alloy steel gears, sealed roller bearings

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

1. Inspect drum grooves monthly per API 4F; 2. Use OEM-specified gear oil (ISO VG 460); 3. Avoid overloading beyond max hookload rating.

2

Main Drum (Drawworks)

Dia. x Length: Ø480mm (18.9in) x 914.5mm (36in); Main Brake: Band type (or hydraulic disc type); Cooling: Force spray water cooling

Carbon steel (16Mn) drum body, hardened steel brake bands/discs, heat-resistant alloy steel components, anti-rust coating

1. Brake wear from frequent heavy braking; 2. Drum warping from uneven cooling; 3. Corrosion from water cooling system leaks or well fluids.

1. Inspect brake pads/shoes weekly; 2. Ensure uniform water flow during brake use; 3. Adjust brake clearance per OEM specs to prevent uneven wear.

3

Auxiliary Brake (Main Drum)

Model: 202" SR hydro brake

Alloy steel (40Cr) brake body, NBR hydraulic seals, stainless steel (316) internal components, copper cooling tubes

1. Seal leakage from hydraulic fluid contamination; 2. Internal wear from debris buildup; 3. Overheating from extended heavy use during deep drilling.

1. Filter hydraulic fluid to ISO 12103 Class 18/15; 2. Monitor brake temperature (keep below 180°C); 3. Flush cooling system quarterly to remove scale.

4

Drill Line

Dia.: Ø29mm (1-1/8in); Lines: 8

High-carbon steel wires (1960 MPa tensile strength), galvanized coating, independent wire rope core (IWRC), anti-wear surface treatment

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

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

5

Traveling Block

Model: YC150

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

1. Sheave groove wear from drill line friction; 2. Bearing failure from vibration or insufficient lubrication; 3. Frame corrosion from well fluids.

1. Align with crown block to reduce uneven wear; 2. Lubricate sheave bearings every 50 operating hours; 3. Inspect for cracks via NDT every 6 months.

1

Mast

Type: JJ155/35-W double section mast; Height: 35m (114.83ft); Max. Static Load: 1548 kN (343238.08lb); Monkey Board Height: 20m (65.6ft)/21.5m (70.54ft); Max. Wind Load: 59.35 kN (110 km/h)

High-strength alloy steel (Q460) sections, bolted/welded construction, anti-corrosion epoxy coating, reinforced stress points

1. Structural fatigue from wind loads or uneven hoisting; 2. Corrosion from outdoor exposure; 3. Bolt loosening 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: ZT1690/4.5-S foldable substructure

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

1. Fatigue from uneven 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; 3. Apply anti-corrosion grease to hinges every 3 months.

1

Rotary Table

Model: ZP175

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

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

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

2

Swivel

Model: SL160

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

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

1. Test pressure integrity before each use (per API 7K); 2. Lubricate bearings every 75 operating hours; 3. Flush internal components after drilling to remove debris.

1

Hydraulic System Components

Rated Pressure: 14 MPa (2002 psi)

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

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

1. Filter hydraulic fluid to ISO 12103 Class 18/15; 2. Inspect lines/seals monthly for damage; 3. Avoid kinking/crushing lines 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 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

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 cable ties to prevent vibration damage; 2. Apply anti-corrosion grease to connectors; 3. Install protective covers on outdoor fixtures.

What lubricant is required for the Allison-S6610HR transmission?

Use Allison TES 295-approved automatic transmission fluid (ATF) to ensure compatibility with clutch materials and valve components. Replace every 1000 operating hours, and use only Allison-certified filters to prevent contamination and extend transmission life.

How often should the ZJ20/1470CZ’s drill line (Ø29mm, 8 lines) be replaced?

Replace per API 9B standards: if broken wires exceed 6 in a single lay or 10 in any 300mm length. For heavy deep-drilling use, inspect weekly, rotate monthly, and replace every 6–12 months (whichever comes first) to avoid catastrophic failure.

How to resolve hydraulic system pressure loss in the ZJ20/1470CZ?

First, check for FKM seal leaks in cylinders/valves—replace damaged seals. Flush the system to remove debris, then verify hydraulic fluid cleanliness (ISO 12103 Class 18/15). Inspect pumps for wear and adjust pressure relief valves to maintain 14 MPa rated pressure.