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0521 IH-2917
ADJUSTING FORK WIDTH
TROUBLESHOOTING
1. Locate and remove the Allen wrench from its clip on
the truck body. (See Figure 3)
2. Loosen the screws on the front and back of each
fork of the truck. (See Figure 4)
3. Slide each fork to the desired position. (See Figure 5)
4. Tighten the screws on each fork of the truck.
(See Figure 6)
5. Return the Allen wrench to its clip on the truck body.
(See Figure 7)
Figure 3
Figure 5
Figure 7
OPERATING ISSUE
CAUSES
RECOMMENDATIONS
The forks do not lift to
maximum height
Air in the hydraulic system
Insufficient hydraulic oil
Expel the air (as noted in Maintenance)
Remove the oil plug (No. 25) and add oil
The forks do not lift
when the handle is
in lifting position
Insufficient hydraulic oil
Valve chain or setting screw are
out of alignment
Leak from valve cone (No. 16) assembly
Remove the oil plug (No. 25) and add oil
Adjust the valve chain with adjusting nut
(No. 71) or adjust the setting screw (as noted
in Operation)
Replace steel ball (No. 19)
The forks drop after
every pump stroke
Air in the hydraulic system
Leak from valve cone
Expel the air (as noted in Maintenance)
Replace valve cone (No. 16) valve housing
(No. 17), O-ring (No. 18) and O-ring (No. 13)
The forks do not lower
Valve chain or setting screw are
out of alignment
Adjust the valve chain with adjusting nut
(No. 71) or adjust the setting screw (as noted
in Operation)
The forks drop when the handle
is in the neutral position
Valve chain or setting screw are
out of alignment
Leak from the valve cone
Leak from the seal rings
Adjust the valve chain with adjusting nut
(No. 71) or adjust the setting screw (as noted
in Operation)
Replace valve cone (No. 16), valve housing
(No. 17), O-ring (No. 18) and O-ring (No. 13)
Replace cup packing (No. 43)
Forks lift when the handle is in
the neutral position
Valve chain or setting screw are
out of alignment
Adjust the valve chain with adjusting nut
(No. 71) or adjust the setting screw (as noted
in Operation)
Oil leaks from the pump
Seal ring damaged or worn out
Replace O-ring (No. 32) and (No. 38)
Figure 4
Figure 6
1-800-295-5510
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