2614950 HEAD Caterpillar parts
345C L, 349E L HVG, 980G II, 980H
Rating:
Alternative (cross code) number:
CA2614950
261-4950
2614950
CA2614950
261-4950
2614950
Weight: 7 pounds 3 kg.
EXCAVATOR, WHEEL LOADER,
Compatible equipment models: 2614950:
Number on catalog scheme:
4
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Information:
Introduction
The shuttle valve ball guide on the inlet manifold for the backhoe valve may come loose. The loose shuttle valve ball guide can cause a loss of pilot pressure. The loss of pilot pressure may cause braking issues and a loss of implement and pilot functions.Problem
Illustration 1 g01766555
(1) 257-0464 Pressure Reducing Valve (2) 257-0440 Control Manifold Gp The shuttle valve ball guide on the inlet manifold for the backhoe valve may come loose. The loose shuttle valve ball guide can cause a loss of pilot pressure. The loss of pilot pressure may cause issues with the service brakes and a loss of implement and pilot functions. Thread Lock has not been applied to the threads on the kit for the shuttle valve. This may cause the kit for the shuttle valve to come loose.Solution
Perform Step 1 through Step 3 in order to confirm that the service braking system pressure is low.
Check the pilot operated backhoe implement functions. Confirm that the pilot operated backhoe implement functions are not working or that the pilot operated backhoe implement functions are working slowly.
Check the pilot operated loader functions. Confirm that the pilot operated loader functions are not working or that the pilot operated loader functions are working slowly.Note: The steering functions will not be affected by this problem. Your machine may be equipped with a mechanical operated loader. The mechanical operated loader will not be affected by this problem.
Illustration 2 g01766776
Right side console
Check the status of the light for the service brake system pressure (3) .Note: If any function does not work to full capacity and the light for the service brake system pressure (3) is illuminated, then proceed with the following steps.
Stop the engine. Release the pressure in the hydraulic system.
Illustration 3 g01771353
Install a 8T-0856 Pressure Gauge on a 177-7860 Hose As . Install the other end of the hose to test port (4) for the pilot oil pressure.Note: Prior to testing the pilot system pressure, make sure that the piston pump is at the optimum pressure.
Start the engine and run the engine at HIGH idle. Stall a cylinder in the loader circuit or the backhoe circuit. The pressure reading must be 3400 500 kPa (500 73 psi).Note: If pilot oil pressure is within the specification, the shuttle valve is operating correctly and no further work is required.
Stop the engine and engage the parking brake.
Illustration 4 g01771355
When the pilot oil pressure is lower than the specification, remove pressure reducing valve (1) .
Remove the lower seat for the shuttle valve and the ball for the shuttle valve from the inlet manifold.
Tighten the upper guide for the ball on the shuttle valve to a torque of 21 1 N m (15 1 lb ft).
Reinstall the ball for the shuttle check valve. Reinstall the seat for the shuttle check valve and tighten to a torque of 21 1 N m (15 1 lb ft). Reinstall pressure reducing valve (1) with a torque of 55 5 N m
The shuttle valve ball guide on the inlet manifold for the backhoe valve may come loose. The loose shuttle valve ball guide can cause a loss of pilot pressure. The loss of pilot pressure may cause braking issues and a loss of implement and pilot functions.Problem
Illustration 1 g01766555
(1) 257-0464 Pressure Reducing Valve (2) 257-0440 Control Manifold Gp The shuttle valve ball guide on the inlet manifold for the backhoe valve may come loose. The loose shuttle valve ball guide can cause a loss of pilot pressure. The loss of pilot pressure may cause issues with the service brakes and a loss of implement and pilot functions. Thread Lock has not been applied to the threads on the kit for the shuttle valve. This may cause the kit for the shuttle valve to come loose.Solution
Perform Step 1 through Step 3 in order to confirm that the service braking system pressure is low.
Check the pilot operated backhoe implement functions. Confirm that the pilot operated backhoe implement functions are not working or that the pilot operated backhoe implement functions are working slowly.
Check the pilot operated loader functions. Confirm that the pilot operated loader functions are not working or that the pilot operated loader functions are working slowly.Note: The steering functions will not be affected by this problem. Your machine may be equipped with a mechanical operated loader. The mechanical operated loader will not be affected by this problem.
Illustration 2 g01766776
Right side console
Check the status of the light for the service brake system pressure (3) .Note: If any function does not work to full capacity and the light for the service brake system pressure (3) is illuminated, then proceed with the following steps.
Stop the engine. Release the pressure in the hydraulic system.
Illustration 3 g01771353
Install a 8T-0856 Pressure Gauge on a 177-7860 Hose As . Install the other end of the hose to test port (4) for the pilot oil pressure.Note: Prior to testing the pilot system pressure, make sure that the piston pump is at the optimum pressure.
Start the engine and run the engine at HIGH idle. Stall a cylinder in the loader circuit or the backhoe circuit. The pressure reading must be 3400 500 kPa (500 73 psi).Note: If pilot oil pressure is within the specification, the shuttle valve is operating correctly and no further work is required.
Stop the engine and engage the parking brake.
Illustration 4 g01771355
When the pilot oil pressure is lower than the specification, remove pressure reducing valve (1) .
Remove the lower seat for the shuttle valve and the ball for the shuttle valve from the inlet manifold.
Tighten the upper guide for the ball on the shuttle valve to a torque of 21 1 N m (15 1 lb ft).
Reinstall the ball for the shuttle check valve. Reinstall the seat for the shuttle check valve and tighten to a torque of 21 1 N m (15 1 lb ft). Reinstall pressure reducing valve (1) with a torque of 55 5 N m
Caterpillar parts catalog:
Parts head Caterpillar catalog:
318B, 318C, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320D, 320D FM, 320D FM RR, 320D2, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 322B L, 322C, 323D L, 323D LN, 323D SA, 323E L, 324D L,...
16G, 16H, 16H NA, 16M, 345B II, 345B L, 345C L, 525B, 525C, 525D, 535B, 535C, 535D, 545, 545C, 545D, 555D, 910E, 910G, 914G, 918F, 924F, 980G, 980G II, 980H, D6R III, D6T, D6T LGP, D6T LGPPAT, D6T XL,...
980G, 980G II, 980H
3588526
HEAD
324D, 325D L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336E, 336E L, 336E LH, 336E LN, 345C, 345C L, 345C MH, 349E, 349E L, 349E L VG, 349F L, 385C L, 568 FM LL, W345C MH
324D, 325D L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336E, 336E L, 336E LH, 336E LN, 345C, 345C L, 345C MH, 349E, 349E L, 349E L VG, 349F L, 385C L, 568 FM LL, W345C MH
3751723
HEAD
324D, 325D L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D2 L, 349E L, 349E L HVG, 349E L VG, 349F L, 385C L, 568 FM LL
324D, 325D L, 330D, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E H, 336E L, 336E LH, 336E LN, 336F L, 340D L, 340D2 L, 349E L, 349E L HVG, 349E L VG, 349F L, 385C L, 568 FM LL
1090, 1190, 1190T, 1290T, 1390, 2290, 2390, 2391, 2491, 2590, 322C, 322C FM, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 324E, 324E L, 324E LN, 325C, 325C FM, 325D, 325D FM, 325D FM LL, 325D L, 325D M...
1390, 2590, 320 L, 320B, 320C, 320D, 320D FM, 320D2, 320D2 L, 322 FM L, 322 LN, 322B L, 322B LN, 322C, 322C FM, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325B L, 325C, 325C...
320 L, 320B, 320C, 320N, 322B, 322B L, 322B LN, 322C, 323D L, 324D, 324D L, 324D LN, 324E, 324E L, 324E LN, 325, 325 L, 325 LN, 325B, 325B L, 325C, 325C FM, 325C L, 325D, 325D FM, 325D L, 328D LCR, 32...
345B II, 345C, 345C L, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L VG, 365B, 365B II, 365C, 365C L, 365C L MH, 374F L, 385C L MH
3706693
HEAD
345B II, 345C, 345C L, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L VG, 349F L, 374D L
345B II, 345C, 345C L, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L VG, 349F L, 374D L
6I6985
HEAD
330, 330 FM L, 330 L, 345B, 345B II, 345B L, 345C, 345C L, 350, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, OEMS
330, 330 FM L, 330 L, 345B, 345B II, 345B L, 345C, 345C L, 350, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, OEMS
1846015
HEAD GP-PUMP
330D L, 330D MH, 345B II, 345B II MH, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L
330D L, 330D MH, 345B II, 345B II MH, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L HVG, 349E L VG, 349F L
3342596
HEAD-PUMP
988G
988G
2524537
HEAD-PUMP
834H, 988G, 988H, 988K, 992K, 993K, 994H
834H, 988G, 988H, 988K, 992K, 993K, 994H
1796917
HEAD
550, 550B, 560B, 570, 570B, 580, 580B, 844, 844H, 990 II, 990H
550, 550B, 560B, 570, 570B, 580, 580B, 844, 844H, 990 II, 990H
3149337
HEAD
966G II, 966H, 972G II, 972H
966G II, 966H, 972G II, 972H
6K4698
HEAD-FLANGE
854G, 992G
854G, 992G
1243760
HEAD-PUMP
994D, 994F
994D, 994F
2465613
HEAD
950H
950H
2459791
HEAD
950H, 962H
950H, 962H
2447778
HEAD
966H, 972H
966H, 972H
966H, 966K, 966M, 966M XE
3704120
HEAD
950H, 950K, 962H, 962K, 966H, 966K, 966M, 972H, 972K, 972M
950H, 950K, 962H, 962K, 966H, 966K, 966M, 972H, 972K, 972M
966H, 966K, 972H, 972K