7Y4278 RING-BACKUP Caterpillar parts
320 L, 320B, 322, 322 FM L, 322B, 322B L, 322B LN, 325, 325 L, 325 LN, 325B, 325B L, 330, 330 L, 330B L, 345B, 345B L, 350, 365B, 365B II, 365B L, 375, 375 L, 5080, 539, M325B, OEMS, W330B
Rating:
Alternative (cross code) number:
CA7Y4278
7Y-4278
7Y4278
CA7Y4278
7Y-4278
7Y4278
Weight: 0.01 pounds 0 kg.
Information:
AXIAL WIDTH
1.25
mm
ID
30
mm
MATERIAL
(PTFE) Plastic
OD
35
mm
RADIAL HEIGHT
2.5
mm
EXCAVATOR, WHEELED EXCAVATOR,
Compare Prices: .
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$5.81
29 Aug 2022
0.1102[0.05] Pounds
US: TakePart
CTP Caterpillar Ring Back Up (7y4278)
CTP
CTP
$7.88
26 Jan 2019
CATERPILLAR AFTERMARKET: CATERPILLAR AFT
Caterpillar Ring Backup 7Y4278 New
$6.95
05 Nov 2020
0.110231131[0.00] Pounds
-: -
CTP Caterpillar Ring Back Up (7y4278)
Number on catalog scheme:
8
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Compatible equipment models: 7Y4278:
Information:
Disassembly Procedure
Start By:
Remove the fuel transfer pump. Refer to Disassembly and Assembly, "Fuel Transfer Pump - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01112986
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Remove drive coupling (1) from the drive shaft. Remove O-ring seal (2).
Remove cap (6), washer (5), spring (4), and poppet valve (3).
Illustration 2 g01113096
Illustration 3 g01112998
Remove bolts (7). Remove head (8) from plate (9).
Remove check valve (11) from head (8).
Remove plate (9). Remove gasket (10). Remove the O-ring seal from the plate. Note: If the bearings in plate (9) are damaged, the plate must be replaced. The bearings are nonserviceable separately.
Illustration 4 g01113004
Remove idler gear (12) and drive shaft (13) from casing (14).
Remove casing (14) from bracket (16). Remove the O-ring seal from casing (14). If necessary, remove terminal bushings (15).
Illustration 5 g01113012
Remove outer lip seal (17) and inner lip seal (18) from bracket (16). Note: If the bearings in bracket (16) are damaged, the bracket must be replaced. The bearings are nonserviceable separately.
Start By:
Remove the fuel transfer pump. Refer to Disassembly and Assembly, "Fuel Transfer Pump - Remove".
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g01112986
Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Remove drive coupling (1) from the drive shaft. Remove O-ring seal (2).
Remove cap (6), washer (5), spring (4), and poppet valve (3).
Illustration 2 g01113096
Illustration 3 g01112998
Remove bolts (7). Remove head (8) from plate (9).
Remove check valve (11) from head (8).
Remove plate (9). Remove gasket (10). Remove the O-ring seal from the plate. Note: If the bearings in plate (9) are damaged, the plate must be replaced. The bearings are nonserviceable separately.
Illustration 4 g01113004
Remove idler gear (12) and drive shaft (13) from casing (14).
Remove casing (14) from bracket (16). Remove the O-ring seal from casing (14). If necessary, remove terminal bushings (15).
Illustration 5 g01113012
Remove outer lip seal (17) and inner lip seal (18) from bracket (16). Note: If the bearings in bracket (16) are damaged, the bracket must be replaced. The bearings are nonserviceable separately.
Cat SIS web machinery list:
Parts ring Caterpillar catalog:
320 L, E180, E200B, E240, E240C, EL240B
322
325B
325B L, 325C FM, 325D FM, 325D FM LL, 330B L, 330C FM, 330D FM, 350, 350 L, CR20, M325B, M325C MH, M325D L MH, P16, S25
350, 350 L, 365B, 375, 375 L, CR20, P16, S25
330, 345B, 345B II, 345B L, 345C, 345C L, 350, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH
325B L, 325C FM, 325D FM, 325D FM LL, 330B L, 330C FM, 330D FM, 345B II, 345B L, 345C, 350, 350 L, 365B, 365B II, M325B, M325C MH, M325D L MH
330, 330 FM L, 330 L, 330B, 330B L, 345B, 345B L, W330B
330, 330B L
345B II, 345B L, 345C, 365B
345B II, 345B L, 345C, 365B
365B, 365B L
7Y4335
RING-PISTON
365B, 375, 375 L, 5080
365B, 375, 375 L, 5080
7Y4334
RING-PISTON
365B, 375, 375 L, 5080
365B, 375, 375 L, 5080
7I1287
RING-BACKUP
365B, 375, 375 L, 5080
365B, 375, 375 L, 5080
0942555
RING
365B, 375, 375 L, 5080, E650
365B, 375, 375 L, 5080, E650
2302759
RING
350, 365B, 365B L, 375, 375 L, 385B, 5080, 5090B
350, 365B, 365B L, 375, 375 L, 385B, 5080, 5090B
1090, 1190, 1190T, 1290T, 1390, 2290, 2390, 2391, 2491, 2590, 322 FM L, 322B L, 322B LN, 322C, 322C FM, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 324E, 324E L, 324E LN, 325, 325 L, 325 LN, 325B, 325...
330, 330 L, 345B, 345B II, 345B L, 345C, 345C L, 350, 350 L, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 375 L, 5080, 5110B, OEMS
322C, 322C FM, 325C, 325C FM, 330, 330 FM L, 330 L, 330C, 330C FM, 330C L, 330C MH, 345B, 345B II, 345B L, 345C, 345C L, 350, 350 L, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 374F L, 375...
320 L, 320B, 320B FM LL, 322, 322 FM L, 322 LN, 322B L, 322B LN, 325, 325 LN, 325B, 325B L, 330, 330 FM L, 330B L, 330D FM, 345B, 345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 350, 365B, 365B II...
0943783
RING
350, 375, 375 L, 5080, E450, E650
350, 375, 375 L, 5080, E450, E650
0943782
RING
350, 375, 375 L, 5080, E450, E650
350, 375, 375 L, 5080, E450, E650
4I5850
RING
322, 322B LN, 325, 325 L, 325 LN, 325B, 325B L, 330, 330 FM L, 330 L, 330B, 330B L, 350, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 385B, 385C, 385C FS, 385C L, 385C L MH, 39...
322, 322B LN, 325, 325 L, 325 LN, 325B, 325B L, 330, 330 FM L, 330 L, 330B, 330B L, 350, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 385B, 385C, 385C FS, 385C L, 385C L MH, 39...