JLG 680S Operator Manual - Manual (Page 117)

SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
3121233 – JLG Lift – 6-33
3. The tightening of the nuts should be done in stages. Fol-
lowing the recommended sequence, tighten nuts per
wheel torque chart.
4. Wheel nuts should be torqued after first 50 hours of opera-
tion and after each wheel removal. Check torque every 3
months or 150 hours of operation.
6.6 DRAINING OIL BUILD UP FROM THE
PROPANE REGULATOR (PRIOR TO S/N
0300134626)
During the course of normal operation oils may build inside
the primary and secondary chambers of the propane pres-
sure regulator. These oils may be a result of poor fuel quality,
contamination of the fuel supply chain, or regional variation
in the make up of the fuel. If the build up of the oil is signifi-
cant this can effect the operation of the fuel control system.
Refer to Section 6.4, Operator Maintenance for maintenance
intervals. More frequent draining may be required if the fuel
supply has been contaminated.
FOR BEST RESULTS WARM THE ENGINE TO OPERATING TEMPERA-
TURE BEFORE DRAINING. THIS WILL ALLOW THE OILS TO FLOW
FREELY FROM THE REGULATOR.
1. Move the equipment to a well ventilated area. Ensure
there are no external ignition sources.
2. Start the engine and bring to operating temperature.
3. With the engine running, close the manual tank valve
and run the engine out of fuel.
Table 6-19. Wheel Torque Chart
TORQUE SEQUENCE
1st Stage 2nd Stage 3rd Stage
70 ft. lbs.
(95 Nm)
170 ft. lbs.
(225 Nm)
300 ft. lbs.
(405 Nm)