Alternate Procedure - Komatsu 930E-2 Shop Manual

3. Place installation tool onto seal ring with toric.
Refer to Special Tools, Section "M" for installation
tool. Lower the rings into a container of tri-chlo-
roethane until all surfaces of toric ring are wet.

ALTERNATE PROCEDURE:

After positioning the seal squarely over the retain-
ing lip, thoroughly lubricate the ring by spraying
with tri-chloroethane #111.
DO NOT USE Stanosol or any other liquid that
leaves an oily film or does not evaporate quickly.
4. With all surfaces of toric ring wet, use installation
tool to position seal ring and toric ring squarely
against the seal housing.
APPLY SUDDEN AND EVEN PRESSURE to
pop (push) toric under housing retaining lip.
5. CHECK WITH SIGHT GAGE. Check variation in
seal ring "assembled height" in four places, 90°
apart. Height variation around the assembled ring
should not exceed 0.51 ±0.05 in. (1.30 ±0.01 mm)
for brake assembly floating seal or 0.45 ±0.04 in.
(1.14 ±0.01 mm) for the hub seal.
J5-12
6. If small adjustments are necessary, DO NOT
PUSH DIRECTLY ON THE SEAL RING. Make
any required adjustments with installation tool.
7. Toric can twist if it is dry on one spot or if there are
burrs or fins on the housing retaining lip.
A bulging toric or cocked seal can contribute to
eventual failure.
NOTE: Toric ring must not slip on ramps of either seal
ring or housing. To prevent slippage, – WAIT – at least
two minutes. Let all tri-chloroethane evaporate before
further assembly. Once correctly in place, the toric ring
must roll on the ramps only. If correct installation is
not obvious, repeat steps 3 through 6.
Disc Brake Assembly J05018 03/01