EN
42 916.000.116_004 DPU 31 PC
8.4 Maintenance activities
8.4.1 General
• Check the operation of the pump.
• Check the pump for damage and leaks. If the pump does not work properly and/or leaks, have it
repaired by a Holmatro Certified Technician.
8.4.2 Hydraulic couplers
• Check the couplers for damage. Have a Holmatro Certified Technician replace damaged couplers.
• Clean the coupler with luke warm water and a mild soap solution.
• Dry the couplers.
• Lubricate the end of the coupler with hydraulic oil or inject WD-40.
• Lubricate the locking ring by injecting WD-40 into the space between the back section and the
locking ring.
• Connect the couplers and check whether the coupler locks automatically. Check the locking by
pulling the hoses apart with a normal manual effort. The couplers must not slip.
• Disconnect the couplers by turning the locking ring and pulling it backwards.
• Connect and disconnect the couplers a few times to improve the internal lubrication of the locking
system.
8.4.3 Dust caps
• Check the dust caps for damage. Replace damaged dust caps.
• Clean the dust caps with running water. Dry the dust cap and treat it with preservative oil.
Hydraulic hoses Check, clean x x x
Engine oil Check, replace x x x x x
Air filter Check, clean x x
2
xx
Spark plug Clean, adjust x x x
Exhaust with spark arrestor Clean x x x
1. Holmatro dealer maintenance.
2. Do this more often in dusty environments.
NOTICE
Consult the engine manual supplied for all actions related to the maintenance of the engine.
Object Action Time interval
After every use
Every 1 month or after
first 10 working hours
Every 3 months or after
every 25 working hours
Every 6 months or after
every 50 working hours
Every 100 working hours
Yearly
1
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