B - Ardiehl.de

FAN GEARBOX (Cont’d)
Checking Backlash (Cont’d)
Put the fan nut (Item 1) [A] on the shaft and tighten snugly.
Install a locking pliers on the fan nut and support the
handle against the long housing [A].
Using a magnetic based dial indicator mounted on a
bench vise, touch the dial stem on the bolt (Item 1) [B].
Hold the locking pliers against the long housing and rotate
the pulley back and forth to read the dial gauge [B].
If the backlash is GREATER than 0.008 inch (0,203 mm),
do the following:
1. Remove a square shim(s) (if present) between the
two housings.
2. Remove a large shim(s) from the tapered end of the
short shaft and add a small shim(s) of the same
thickness between the bearing and the gear on the
screw end of the shaft.
If the backlash is LESS than 0.005 inch (0,127 mm) do the
following:
1. Add a square shim(s) between the two housings.
2. Remove a small shim(s) between the bearing and
the gear on the screw end of the short shaft and add
a large shim(s) of the same thickness between the
snap ring and the bearing on the tapered end of the
shaft.
–7–26–
A
B
1
1
P–02982
P–02979
853, 853H BICS Loader
Service Manual