Assembly - Komatsu 830E Shop Manual

Assembly

1. Assemble brake support, (13, Figure 3-5) to the
spindle (17), if removed.
2. Align the brake support so the center line of one
of the brake head mounting surfaces is above
the horizontal center line, and in line with the
vertical center line of the tapered bore on the
inboard end of the spindle. The completely
machined side of brake support plate should
face the outboard end.
3. Lubricate underside of capscrew (21) heads and
threads with multi-purpose grease Number 2
with 5% Molybdenum Disulphide. Install cap-
screws and flat washers and tighten to 1,480 ft.
lbs. (2007 N.m) torque.
NOTE: The mating surfaces between the spindle and
the brake caliper support must be clean and dry, and
with no excess capscrew lubricant on these surfaces.
4. Install spacer (18). If necessary, tap lightly to
seat spacer against spindle. Spacer must fit
tightly against spindle shoulder.
5. Check that inner bearing cone (19) is a slip fit on
spindle (17), then remove. Install pin (26) into
slot on spindle and install inner bearing cone
(19) on spindle (17) over pin (26) and tight
against spacer (18).
NOTE: Cone is a loose fit on the spindle.
6. Install one half of seal assembly (16) on spindle
(17) using seal installation tool, TY2150 (Figure
3-7) and soft tipped mallet. For proper installa-
tion, use the following instructions:
a. Handle all parts with care to avoid damaging
critical areas. The sealing face of seal must
not be nicked or scratched.
b. Remove all oil and protective coating from
seal and from the seal seat using nonflam-
mable cleaning solvent, make certain all sur-
faces are absolutely dry.
c. Check seal seat retaining lip for rough tool
marks or nicks. Smooth any nicks and re-
clean.
d. Install rubber sealing ring so it seats uni-
formly in the relief of seal. Be sure that it
rests uniformly against the retaining lip.
e. Using seal installation tool, install the floating
ring seal assembly in the seal seat. The
depth around the circumference of the seal
should be uniform.
G3-6
f. Before assembling wheel hub and spindle,
g. Place a few drops of light oil on a clean cloth
Do not allow oil to contact the rubber sealing ring
or its seats.
FIGURE 3-7. INBOARD SEAL INSTALLATION
1. Seal Installation Tool
(TY2150)
NOTE: To assure bearing lubrication during initial
operation lightly lubricate the bearings with SAE
80W-90 oil.
7. If removed, install disc (1, Figure 3-6) on the
wheel hub using capscrews and flat washers
(2). Lubricate the underside of capscrew (2)
heads and threads with multi-purpose grease
Number 2 with 5% Molybdenum Disulphide.
Tighten capscrews to 1,480 ft. lbs. (2007 N.m)
torque.
NOTE: The mating surfaces between the spindle and
the brake disc must be clean and dry, and with no
excess capscrew lubricant on these surfaces.
8. Install bearing cups (11 & 20 Figure 3-5) in the
wheel hub (1) as follows:
a. Preshrink cups by packing them in dry ice, or
NOTE: Do not cool below -65° F (-54° C).
Front Wheel Hub and Spindle
wipe the seal faces with lint-free cloth to
remove any foreign material and fingerprints.
and completely coat the sealing faces of
seals.
2. Spindle
by placing then in a deep-freeze unit.
04/03 G03018