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Maintenance
85
C2500CB-OM-EN-16
12. Allow the oil to drain from the regulator into a suitable receptacle.
13. When all the oil has drained completely, remove the receptacle and refit the
drain plug.
14. Remount the regulator and bracket assembly securely using the fasteners that
were removed at step 10.
15. Slowly open the valve on the LPG bottle.
16. Start the engine and check for leaks at the regulator and the LP gas inlet and
outlet fittings. Use a soapy water solution or an electronic leak detector. Repair
any leaks.
17. Check coolant line connections to ensure no leaks are present.
18. Close the bonnet.
19. Dispose of drained material in compliance with statutory legislation.
6.8.2
GM Engine LP Gas Pressure Regulator Oil Build-Up
The GM LP gas regulator is mounted on the engine.
Draining Oil Build-up from the GM Engine LP Gas Pressure Regulator:
1. Park the truck in a well ventilated area and ensure no external ignition sources
are present.
2. Lower the mast fully and tilt the mast fully forward.
3. Start the engine and wait until it has reached its stable operating temperature.
This will help the oil to flow from the regulator.
4. When the engine is warm, close the valve on the LPG bottle fully.The engine
will continue to run until it has used up all the fuel in the fuel lines.
5. When the engine stops, turn the ignition key switch to the ‘0’ (off) position and
remove the key.
6. Isolate the battery by turning the battery isolator key switch anticlockwise.
7. Open the bonnet from the right hand side of the truck to gain access to the LPG
pressure regulator.
8. Ensure all parts concerned are cool enough to touch, otherwise wear heat
resistant gloves before proceeding.
9. Loosen the hose clamp on the LP gas outlet hose and remove the hose.
10. Unbolt the regulator by removing the two bolts from underneath.
11. Turn the regulator so that the LP gas outlet fitting is pointing straight down.
12. Allow the oil to drain from the regulator into a suitable receptacle.
13. Inspect the regulator outlet for any large dried particles and remove.
14. When all the oil has drained completely, remove the receptacle and refit the
drain plug securely.
15. Remount the regulator securely using the bolts that were removed at step 10.
16. Reconnect the hose to the LP gas outlet.