16
Apply two
streams of
gear oil to threads.
(see Section 7.9 for
detailed instructions)
Figure 20, Cylinder Thread Lubrication
9. Remove the lifting sling and lower the jack front access
cover to its normal position, so it is supported by the chain
drive plate. The front access cover and protective bellows
should now completely cover the cylinder threads and chain
drive mechanism.
WARNING
Be certain that jack front access cover is
installed and fully lowered before starting the jack. Never
operate the jack with the front access cover removed or
raised, either during lubrication and maintenance procedures
or when the jack is in use. Failure to observe this precaution
may result in persons becoming entangled in the moving
parts of the chain drive mechanism. Serious personal injury
could result.
10. Reconnect the air supply hose and move the air-shuto
ff
valve to the OPEN position.
WARNING
In the following step, it will be necessary to
extend and retract the cylinder several times. Stay clear of
the cylinder and related components. Keep hands and fingers
away from pinch and crush points. Serious personal injury
could occur if these precautions are not observed. Refer to
Section 1.4 of this manual for additional hazard information.
11. With no load on the jack, fully extend and retract the cylinder
several times to distribute the gear oil on the cylinder
threads, and on the chain and drive components. Verify
proper operation.
12. Reinstall the jack rear access cover. Refer to Section 7.1.
Figure 19, Lock Nut Chain Drive Assembly
C
D
E1
G
E1
D
I
Key:
A. Hydraulic Cylinder
B. Lock Nut
C. Drive Chain
D. Roller
E 1. Chain Tensioner
E 2. Tensioner Pivot Shaft
F. Chain Drive Plate
G. Drive Sprocket
H. Proximity Sensors
I. Lock Nut Sprocket
A
H
B
F
E2
E2
✽
✽
✽
✽
Lubricate with gear oil.
(see Section 7.9 for
detailed instructions)
