Intermediate service - chain, wheel and rock trenchers (all makes)
Estimated duration: 3 - 5 hours • Frequency: every 500 engine hours
Equipment Details
| # | Service Action | Type | Done | Notes |
|---|---|---|---|---|
| Engine (additional to 250-hour) | ||||
| 1 | Replace fuel filter element | REPLACE | ☐ | |
| 2 | Replace outer air filter element | REPLACE | ☐ | |
| 3 | Test coolant concentration (refractometer) | TEST | ☐ | |
| 4 | Adjust fan belt tension | ADJUST | ☐ | |
| Hydraulic System (additional to 250-hour) | ||||
| 5 | Replace hydraulic return filter | REPLACE | ☐ | |
| 6 | Replace hydraulic pilot filter (if fitted) | REPLACE | ☐ | |
| 7 | Take hydraulic oil sample for analysis | SAMPLE | ☐ | |
| Digging Chain / Teeth (additional to 250-hour) | ||||
| 8 | Measure tooth height (mm) at multiple points | MEASURE | ☐ | |
| 9 | Check chain stretch (pitch over 10 links) | MEASURE | ☐ | |
| 10 | Inspect drive and idler sprockets for wear | INSPECT | ☐ | |
| 11 | Inspect crumber bar and shoes for wear | INSPECT | ☐ | |
| 12 | Record all measurements for trend monitoring | CHECK | ☐ | |
| Conveyor / Spoil Discharge (additional to 250-hour) | ||||
| 13 | Inspect conveyor belt or auger for wear | INSPECT | ☐ | |
| 14 | Check belt tracking and tension | ADJUST | ☐ | |
| 15 | Inspect discharge chute for blockage and wear | INSPECT | ☐ | |
| Boom and Frame (additional to 250-hour) | ||||
| 16 | Inspect boom pivot bushes and pins for play | INSPECT | ☐ | |
| 17 | Check boom lift cylinder pins and bushes | INSPECT | ☐ | |
| Drivetrain (additional to 250-hour) | ||||
| 18 | Check valve clearance and adjust if required | ADJUST | ☐ | |
| 19 | Inspect drive belts for cracking or glazing | INSPECT | ☐ | |
| Electrical (additional to 250-hour) | ||||
| 20 | Test battery load (CCA) | TEST | ☐ | |
| 21 | Clean and tighten all earth straps | CLEAN | ☐ | |
| Cab (additional to 250-hour) | ||||
| 22 | Check and clean A/C condenser | CLEAN | ☐ | |
| 23 | Test A/C operation and refrigerant | TEST | ☐ | |
Fluid Specifications (General Guide)
| System | Type / Grade | Approx. Capacity |
|---|---|---|
| Engine oil | 15W-40 CI-4 / CK-4 | 8 - 15 L |
| Hydraulic oil | ISO VG 46 (AW 46) | 80 - 180 L (system) |
| Coolant | 50/50 ethylene glycol | 12 - 25 L |
| Final drive / gearbox oil | 80W-90 GL-5 | 3 - 6 L per side |
| Digging chain oil (if auto-lube) | Bar and chain oil or SAE 30 | As required |
| Grease | EP2 lithium complex | As required |
Specifications are general guidelines for typical chain and wheel trenchers. Always refer to the manufacturer's service manual for your specific make and model. Capacities vary by machine size.
Parts / Consumables Required (500-hour additional items)
| # | Part / Consumable | Part Number | Qty | Ready |
|---|---|---|---|---|
| 1 | Engine oil (15W-40) | 8-15 L | ☐ | |
| 2 | Engine oil filter | 1 | ☐ | |
| 3 | Fuel filter element | 1 | ☐ | |
| 4 | Outer air filter element | 1 | ☐ | |
| 5 | Hydraulic return filter | 1 | ☐ | |
| 6 | Hydraulic pilot filter | 1 | ☐ | |
| 7 | Fuel/water separator element | 1 | ☐ | |
| 8 | EP2 grease cartridges | 2-4 | ☐ | |
| 9 | Coolant test strips / refractometer | 1 | ☐ | |
| 10 | Oil sample bottle (hydraulic) | 1 | ☐ | |
| 11 | Coolant (pre-mixed or concentrate) | As req. | ☐ | |
| 12 | Rags, drip tray, waste oil container | - | ☐ |
Notes / Defects Identified
Next Service Due
Technician
Supervisor / Workshop Manager