Disassembly
1.Match mark housing (3, Figure 7-2), piston housing
(4), and cap structure (5).
The following procedure is necessary to properly
relieve the pressure exerted by the belleville
springs on the cap structure. Failure to follow this
procedure could result in capscrew failure and
personal injury during disassembly!
2. Loosen the 12-point capscrews (10, Figure 7-2)
evenly, in 20 ft. lbs. (27 N.m) increments.
a. Alternate the loosening procedure by selecting
successive capscrews located approximately
180° from the previous.
b. Continue loosening procedure until spring
pressure is released and capscrews and wash-
ers can be removed by hand.
3. Remove cap structure (5). Lift belleville springs (7)
out of piston (6) counterbore.
4. Lift piston/housing assembly off housing (3) dow-
els.
5. Remove springs (1), separator discs (12), and
friction discs (13).
6. Remove piston (6) from piston housing (4). Re-
move piston seals (8 & 9) and discard.
Cleaning and Inspection
1. Clean all parts thoroughly.
2. Inspect dowel pins (2, Figure 7-2). If pins are
grooved from excessive wear or otherwise dam-
aged, press defective pin out of housing.
3. Inspect compression springs (1, Figure 7-2).
Check springs for free height and test for height
under load. Replace if not within approximately
10% of specification.
Free Height:
. . . . . . . . . . . . . . . . . . 0.456 in. (11.58 mm)
Height @ 36.4 lb. (162N) working load:
. . . . . . . . . . . . . . . . . . . 0.350 in. (8.89 mm)
4. Inspect belleville springs for cracks or damage.
5. It is recommended the separator discs and friction
discs be replaced if wear is indicated.
6. Check piston and piston housing bore for
scratches, nicks, pitting or other defects than may
cause seal leakage. Slight defects may be re-
paired by polishing.
Assembly
1. If dowel pins (2, Figure 7-2) have been removed,
press new dowel pins into holes in housing until
fully seated against shoulder.
2. Install a separator disc (12) over dowel pins. Insert
a spring (1) over each dowel pin. Insert a friction
disc (13). Insert springs (1) over dowels.
3. Install another separator disc, the 2nd friction disc
and the remaining separator disc.
NOTE: The internal teeth of the two friction discs must
be aligned and must be concentric with the pilot
diameter machined on the rear of the housing to
enable the completed assembly to be installed prop-
erly. If available, a mating gear as installed on the
wheel motor rotor shaft (4, Figure 7-1) should be used
to simplify alignment.
4. Assemble the seals (8 & 9) on the piston.
a. Install O-ring seal in bottom of each groove. Be
certain O-rings are not twisted.
b. If available, use an expander to expand the O.D.
of each seal enough to allow it to slide onto
piston.
NOTE: If an expander tool is not available, the seals
may be heated to 400°F (204°C) MAXIMUM. This will
allow ring to be manually expanded until it will fit over
piston.
c. When each seal is over the groove, re-size by
compressing the seal ring. Use a full circle
clamp with any sharp edges or grooves cov-
ered to prevent damage to the seal surfaces.
d. Install the quad ring in each seal.
5. Lubricate the piston seals and insert piston (6) into
piston housing (4).
6. Install piston/housing assembly over dowels on
housing (3).
7. Place belleville springs (7) in piston counterbore
as shown in Figure 7-2.
8. Place cap structure (5) on assembly and insert
capscrews (10) with hardened washer (11). Do
not tighten capscrews.
The following procedure is necessary to properly
compress the belleville springs. Failure to follow
this procedure could result in capscrew failure and
personal injury during assembly!
J7-4
Parking Brake
J07010 12/98
Содержание 930E-2
Страница 1: ......
Страница 2: ......
Страница 4: ...NOTES ...
Страница 8: ...KOMATSU MODEL 930E Dump Truck A 4 Introduction A00017 03 01 ...
Страница 10: ...NOTES A1 2 Index A01001 2 94 ...
Страница 12: ...930E MAJOR COMPONENTS A2 2 Major Component Description A02055 ...
Страница 35: ...START HERE Walk Around Inspection A03017 General Safety and Operating Instructions A3 21 ...
Страница 46: ...NOTES A3 32 General Safety and Operating Instructions A03017 ...
Страница 78: ...NOTES B1 2 Index B01016 ...
Страница 88: ...NOTES B3 6 Dump Body B03013 03 01 ...
Страница 92: ...NOTES B4 4 Fuel Tank B04015 ...
Страница 94: ...NOTES C1 2 Index C01021 03 01 ...
Страница 118: ...NOTES C5 6 Air Filtration System C05013 5 98 ...
Страница 126: ...NOTES D2 6 24VDC Electric Supply System D02018 ...
Страница 142: ...NOTES D3 16 24VDC System Components D03019 04 01 ...
Страница 146: ...FIGURE 2 1 PROPULSION SYSTEM DIAGRAM E2 2 Electrical Propulsion System Components E02014 3 01 ...
Страница 191: ...FIGURE 2 3 ELECTRICAL CABINET FRONT VIEW E02014 3 01 Electrical Propulsion System Components E2 47 ...
Страница 192: ...FIGURE 2 4 ELECTRICAL CABINET TOP VIEW E2 48 Electrical Propulsion System Components E02014 3 01 ...
Страница 193: ...FIGURE 2 5 ELECTRICAL CABINET REAR FLOOR VIEW E02014 3 01 Electrical Propulsion System Components E2 49 ...
Страница 196: ...NOTES E2 52 Electrical Propulsion System Components E02014 3 01 ...
Страница 240: ...NOTES E3 44 AC Drive System Electrical Checkout Procedure 3 01 E03015 Release 17 Software ...
Страница 242: ...NOTES G1 2 Index G01017 ...
Страница 250: ...NOTES G2 8 Tires and Rims G02015 ...
Страница 274: ...NOTES H1 2 Index H01013 04 01 ...
Страница 282: ...NOTES H2 8 Front Suspensions H02013 2 01 ...
Страница 288: ...NOTES H3 6 Rear Suspensions H03013 ...
Страница 334: ...NOTES J3 32 Brake Circuit Component Service J03019 1 99 ...
Страница 378: ...NOTES L2 8 Hydraulic System L02028 ...
Страница 401: ...FIGURE 4 5 FLOW AMPLIFIER VALVE L04031 Steering Circuit L4 7 ...
Страница 403: ...FIGURE 4 6 FLOW AMPLIFIER NO STEER L04031 Steering Circuit L4 9 ...
Страница 405: ...FIGURE 4 7 FLOW AMPLIFIER LEFT STEER L04031 Steering Circuit L4 11 ...
Страница 407: ...FIGURE 4 8 FLOW AMPLIFIER RIGHT STEER L04031 Steering Circuit L4 13 ...
Страница 409: ...FIGURE 4 9 FLOW AMPLIFIER NO STEER EXTERNAL SHOCK LOAD L04031 Steering Circuit L4 15 ...
Страница 414: ...NOTES L4 20 Steering Circuit L04031 ...
Страница 422: ...NOTES L5 8 Steering Control Unit L05021 ...
Страница 429: ...L06021 Steering Circuit Component Repair L6 7 ...
Страница 450: ...NOTES L6 28 Steering Circuit Component Repair L06021 ...
Страница 466: ...NOTES L7 16 Hoist Circuit L07023 ...
Страница 492: ...NOTES L9 6 Hydraulic System Filters L09008 ...
Страница 504: ...NOTES L10 12 Hydraulic Check out Procedure L10012 ...
Страница 508: ...NOTES M1 2 Index M01034 03 01 ...
Страница 518: ...NOTES M2 3 10 Ansul Checkfire Electric Detection and Actuation System M02003 ...
Страница 524: ...NOTES M5 4 Wiggins Quick Fill Fuel System M05002 10 96 ...
Страница 532: ...NOTES M8 8 Special Tools M08012 9 99 ...
Страница 560: ...NOTES M9 28 Air Conditioning System M09010 6 97 for HFC 134a Refrigerant ...
Страница 575: ...ALTERNATOR PARTS Refer to previous page for Parts List M13003 04 01 Niehoff Alternator Overhaul Manual M13 5 ...
Страница 618: ...M20 20 Payload Meter II M20007 10 00 ...
Страница 619: ...M20007 10 00 Payload Meter II M20 21 ...
Страница 627: ...M20007 10 00 Payload Meter II M20 29 ...
Страница 634: ...NOTES N1 2 Index N01020 03 01 ...
Страница 654: ...NOTES N3 6 Cab Components N03011 7 98 ...
Страница 660: ...NOTES N4 6 Operator Comfort N04020 ...
Страница 686: ...NOTES N5 26 Operator Cab Controls N05044 ...
Страница 688: ...NOTES P1 2 Index P01024 ...
Страница 691: ...P02034 Lubrication and Service P2 3 ...
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Страница 737: ...NOTES R1 2 930E Schematics R01048 with Cummins QSK60 Series Engine ...
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