2977750 PISTON Caterpillar parts
311C, 312C, 312C L, 314C, 318C, 320C, 320C FM, 320C L, 320D, 320D LRR, 321C, 323D L, 323D LN
Rating:
Alternative (cross code) number:
CA2977750
297-7750
2977750
CA2977750
297-7750
2977750
Weight: 2 pounds 0 kg.
EXCAVATOR,
Related part:
2977750
PISTON PACK AS
10R7723
R
You can buy:
US$160.13
14 Jul 2025
FridayParts
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CARTEX 4 Pcs Piston 2977750 for FITS Caterpillar CAT Engine 3064 3066 Excavator 311C 318C 320C 320D in USA
CARTEX Whether you're a professional mechanic or a DIY enthusiast,We've got you covered with a wide range of parts that meet the highest standards of quality and performance. || Order your High Quality Part with peace of mind, knowing we prioritize your satisfaction. Quality Parts, Superior Performance - it's not just a promise, it's our standard || QUESTIONS? : We at CARTEX - High Quality Parts USA has more than 40 years of experience in industry and has in-house technicians, If you are not sure if this part fits your machine or tractor, just send us an email before you make the purchase and our in house technicians will revert back to you, right away.
CARTEX Whether you're a professional mechanic or a DIY enthusiast,We've got you covered with a wide range of parts that meet the highest standards of quality and performance. || Order your High Quality Part with peace of mind, knowing we prioritize your satisfaction. Quality Parts, Superior Performance - it's not just a promise, it's our standard || QUESTIONS? : We at CARTEX - High Quality Parts USA has more than 40 years of experience in industry and has in-house technicians, If you are not sure if this part fits your machine or tractor, just send us an email before you make the purchase and our in house technicians will revert back to you, right away.
4 Pcs Piston 2977750 Fit Intended For Engine 3064 3066 Excavator 311C 318C 320C 320D
Generic Machinery Parts || Heavy Equipment Parts || Spare Parts
Generic Machinery Parts || Heavy Equipment Parts || Spare Parts
This part in 5 request:
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2021-11-08
2020-01-14
2020-01-13
2020-01-13
2019-11-18
Number on catalog scheme:
2
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Compatible equipment models: 2977750:
Information:
Testing the Unloader System
In order to test the inlet valve, the discharge valve, and the unloader piston, it is necessary to have access to compressed air. Assorted fittings and a soap solution are also required.Testing the Pressure Buildup
Note: This test should be run with the engine and the air system at normal operating temperature.
Start the engine. Lower the air pressure in the system to 620.5 kPa (90 psi). Run the engine at 1800 rpm. Measure the cycle time of the air compressor. Record the cycle time of the air compressor from 689 kPa (100 psi) to 896 kPa (130 psi). Run this test three times and use the average time. Compare this time to previously recorded buildup times.
Run this test three times and use the average time. Compare this time to previously recorded buildup times.Leakage from the unloader is demonstrated by the excessive cycling of the air compressor.
Lower the system pressure. Run the engine at 1800 rpm and allow the cutout pressure setting for the compressor governor to activate. Lower the engine rpm to low idle.
The compressor should remain unloaded for a minimum of 5 to 10 minutes. If the compressor cycles more frequently and the system does not have excessive leakage, replace the air compressor or repair the compressor unloader mechanism.
In order to test the inlet valve, the discharge valve, and the unloader piston, it is necessary to have access to compressed air. Assorted fittings and a soap solution are also required.Testing the Pressure Buildup
Note: This test should be run with the engine and the air system at normal operating temperature.
Start the engine. Lower the air pressure in the system to 620.5 kPa (90 psi). Run the engine at 1800 rpm. Measure the cycle time of the air compressor. Record the cycle time of the air compressor from 689 kPa (100 psi) to 896 kPa (130 psi). Run this test three times and use the average time. Compare this time to previously recorded buildup times.
Run this test three times and use the average time. Compare this time to previously recorded buildup times.Leakage from the unloader is demonstrated by the excessive cycling of the air compressor.
Lower the system pressure. Run the engine at 1800 rpm and allow the cutout pressure setting for the compressor governor to activate. Lower the engine rpm to low idle.
The compressor should remain unloaded for a minimum of 5 to 10 minutes. If the compressor cycles more frequently and the system does not have excessive leakage, replace the air compressor or repair the compressor unloader mechanism.
Caterpillar parts catalog:
Parts piston Caterpillar catalog:
318C, 319C, 320C, 320C FM, 320C L, 320D, 320D LRR, 321C, 323D L, 323D LN
315C, 315D L, 318C, 318E L, 319C, 319D, 319D L, 319D LN, 320C, 320C L, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 3...
318C, 319D L, 320C, 320C FM, 320C L, 320D, 320D FM, 320D LN, 320D LRR, 320D RR, 321C, 321D LCR, 323D L
315D L, 316E L, 318C, 318D L, 318E L, 319D L, 319D LN, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 3...
318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321C, 321D LCR, 323D L, 323D LN, 323D SA
318C, 319C, 319D, 319D LN, 320C, 320D, 320D FM, 320D FM RR, 320D L, 323D L, 323D LN
1390, 2590, 320B, 320C, 320D, 320D FM, 320D2, 320D2 L, 322B LN, 322C, 322C FM, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D L, 324D LN, 325C, 325C FM, 325D, 325D FM, 325D L, 329D L, 329D LN, 329E, 33...
320B, 320C, 320N, 322 FM L, 322 LN, 322B L, 322B LN, 322C FM, 325, 325 L, 325 LN, 325B L, 325C, 325C L, 325D MH, 330, 330 FM L, 330B L, 330C, 345B L, 350, 350 L, 5080, M320, M325B
320B, 320C, 320C FM, 320C L, 320N, 321C, 322, 322B, 322C
320C, 320C FM, 320D, 320D FM, 320D FM RR, 322C FM, 323D LN, 323D SA, 323E L, 324D FM, 324D FM LL, 325C, 325D, 325D L, 329D, 329D L, 329D LN, 329E, 329E L, 329E LN, OEMS
320C, 322C, 323D L, 324D, 324D L, 324D LN, 324E, 324E L, 324E LN, 325C, 325C FM, 325C L, 325D, 325D FM, 325D L, 326D L, 328D LCR, 329D, 329D L, 329D LN, 329E, 330C, 330C FM, 330C L, 330D, 330D FM, 330...
320 L, 320C
2005638
PISTON
304, 305, 305.5, 306
304, 305, 305.5, 306
2004962
PISTON
304, 305
304, 305
1691102
PISTON
305
305
1987058
PISTON
304, 304C CR, 305, 305.5D, 305.5E, 305C CR, 305D CR, 305E
304, 304C CR, 305, 305.5D, 305.5E, 305C CR, 305D CR, 305E
1992094
PISTON
305
305
1768587
PISTON
311C, 314C
311C, 314C
1655817
PISTON-BRAKE
311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR
311C, 311D LRR, 311F LRR, 312C, 312C L, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 312E, 312E L, 313D, 313D2, 314C, 314D CR, 314D LCR, 314E CR, 314E LCR
311C, 311D LRR, 312C, 312C L, 312D, 312D L, 314C, 314D CR, 314D LCR
1655806
PISTON
311C, 312C, 312C L, 312D, 314C
311C, 312C, 312C L, 312D, 314C
311C, 312C, 312C L, 314C, 318C, 320C, 320C FM, 320C L, 320D, 320D LRR, 321C, 323D L, 323D LN
311C, 312C, 312C L, 314C, 318C, 320C, 320C FM, 320C L, 320D, 320D LRR, 321C, 323D L, 323D LN