1125115 HOSE AS Caterpillar parts
315B L, 317B LN, 318B, 320 L, 322 FM L, 322 LN, 345B II, 345B L
Rating:
Alternative (cross code) number:
CA1125115
112-5115
1125115
CA1125115
112-5115
1125115
Weight: 1 pounds 0 kg.
EXCAVATOR,
Compatible equipment models: 1125115:
Number on catalog scheme:
36
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Information:
Introduction
The accumulator stores pilot pressure oil for use at the main control valves. During multiple operations, the pilot system will demand more oil in order to maintain valve operation. The accumulator provides pilot pressure oil to the pilot system, when the pilot pump flow is inadequate. Inadequate flow will cause sluggish implement control.Required Tools
Illustration 1 g01089423
Tooling (A)
Illustration 2 g01784963
This tooling group is used to test the pressure in the pilot manifold.
Table 2
Tool Item Qty Part Number Description
A A1 1 8T-0856 Pressure Gauge
(0 to 6,000 kPa (0 to 870 psi))
A2 1 6V-3989 Fitting
A3 2 6V-4143 Quick Connect Coupler
A4 1 177-7860 Hose As
F F1 1 6V-3965 Fitting
F2 1 3J-1907 O-Ring Seal Test Procedure
Preliminary Test
Start the engine. Place the hydraulic lockout lever in the UNLOCKED position.
Position the implements 1 m (3.3 ft) from the ground.
Shut off the engine by turning the start switch to the OFF position. When the engine has stopped, return the start switch to the ON position.
Move the joysticks in order to lower the implements. When the accumulator circuit is functioning properly, there will be enough stored energy for approximately 20 seconds after a power loss to lower the implements to the ground safely.
If the preliminary test fails and the implements are unable to be lowered to the ground safely after a power loss, proceed to test the accumulator circuit. Refer to "Testing the Accumulator (Nitrogen Gas Charge)". Testing the Accumulator (Nitrogen Gas Charge)
Note: Some accumulators do not have a charge pressure port. This type of accumulator cannot be recharged. The accumulator must be replaced. Replacement accumulators are equipped with a charge pressure port.
Illustration 3 g03506905
Cap for charging port on accumulator
Refer to Special Instruction, REHS5464, "Accumulator Discharging and Charging Procedures" for the testing and charging procedure. Note: If the pressure reading is within the specifications of Table 1, continue to test the operation of the check valve within the pilot manifold. Refer to "Testing the Check Valve (Pilot Manifold)".Testing the Check Valve (Pilot Manifold)
Illustration 4 g03506175
Location of the check valve in the pilot manifold
If the check valve does not close properly during a loss of pilot pressure, the accumulator precharge pressure will exhaust before being able to provide lowering of the implements.Note: Make sure that the accumulator has a proper nitrogen gas charge before attempting to test the check valve. An improperly charged accumulator may give indications of a problem with the check valve.
Stop the engine. Release the pressure from the pilot hydraulic system. Refer to Testing and Adjusting, "System Pressure - Release".
Connect a 6000 kPa (800 psi) pressure gauge to port "PSA2" on the pilot manifold. Use tooling group (A) and tooling group (F).
Start the engine and place the hydraulic lockout lever in the UNLOCKED position.
Shut off the engine by turning the start switch to the OFF position. When the engine has stopped, return the start switch to the ON position.
After the power loss, the accumulator will still have pilot system pressure. Use the stopwatch to observe the pilot pressure. The pilot
The accumulator stores pilot pressure oil for use at the main control valves. During multiple operations, the pilot system will demand more oil in order to maintain valve operation. The accumulator provides pilot pressure oil to the pilot system, when the pilot pump flow is inadequate. Inadequate flow will cause sluggish implement control.Required Tools
Illustration 1 g01089423
Tooling (A)
Illustration 2 g01784963
This tooling group is used to test the pressure in the pilot manifold.
Table 2
Tool Item Qty Part Number Description
A A1 1 8T-0856 Pressure Gauge
(0 to 6,000 kPa (0 to 870 psi))
A2 1 6V-3989 Fitting
A3 2 6V-4143 Quick Connect Coupler
A4 1 177-7860 Hose As
F F1 1 6V-3965 Fitting
F2 1 3J-1907 O-Ring Seal Test Procedure
Preliminary Test
Start the engine. Place the hydraulic lockout lever in the UNLOCKED position.
Position the implements 1 m (3.3 ft) from the ground.
Shut off the engine by turning the start switch to the OFF position. When the engine has stopped, return the start switch to the ON position.
Move the joysticks in order to lower the implements. When the accumulator circuit is functioning properly, there will be enough stored energy for approximately 20 seconds after a power loss to lower the implements to the ground safely.
If the preliminary test fails and the implements are unable to be lowered to the ground safely after a power loss, proceed to test the accumulator circuit. Refer to "Testing the Accumulator (Nitrogen Gas Charge)". Testing the Accumulator (Nitrogen Gas Charge)
Note: Some accumulators do not have a charge pressure port. This type of accumulator cannot be recharged. The accumulator must be replaced. Replacement accumulators are equipped with a charge pressure port.
Illustration 3 g03506905
Cap for charging port on accumulator
Refer to Special Instruction, REHS5464, "Accumulator Discharging and Charging Procedures" for the testing and charging procedure. Note: If the pressure reading is within the specifications of Table 1, continue to test the operation of the check valve within the pilot manifold. Refer to "Testing the Check Valve (Pilot Manifold)".Testing the Check Valve (Pilot Manifold)
Illustration 4 g03506175
Location of the check valve in the pilot manifold
If the check valve does not close properly during a loss of pilot pressure, the accumulator precharge pressure will exhaust before being able to provide lowering of the implements.Note: Make sure that the accumulator has a proper nitrogen gas charge before attempting to test the check valve. An improperly charged accumulator may give indications of a problem with the check valve.
Stop the engine. Release the pressure from the pilot hydraulic system. Refer to Testing and Adjusting, "System Pressure - Release".
Connect a 6000 kPa (800 psi) pressure gauge to port "PSA2" on the pilot manifold. Use tooling group (A) and tooling group (F).
Start the engine and place the hydraulic lockout lever in the UNLOCKED position.
Shut off the engine by turning the start switch to the OFF position. When the engine has stopped, return the start switch to the ON position.
After the power loss, the accumulator will still have pilot system pressure. Use the stopwatch to observe the pilot pressure. The pilot
Caterpillar parts catalog:
Parts hose Caterpillar catalog:
320B, 320C, 320C FM, 320D, 320D L, 320D LRR, 320D RR, 321C, 322B, 322C, 322C FM, 323D L, 325B, 325B L, 325C, 325C FM, 330C FM, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, ...
320 L, 322 FM L, 322 LN, 322B, 322B L, 322B LN, 325, 325B L, 325D FM, 325D FM LL, 375, 375 L, 385B, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 5080, 5090B, M325B
320B, 322B, 322B L, 322B LN, 325B, 325B L, 330B, 330B L, 345B, 345B II, 345B II MH, 345B L, 5110B, W330B, W345B II
320B, 322B, 322B L, 322B LN, 325B, 325B L, 330B, 330B L, 345B, 345B II, 345B II MH, 345B L, 5110B, M325B, W330B, W345B II
320B, 322B, 322B L, 322B LN, 325B, 325B L, 330B, 330B L, 345B, 345B II, 345B II MH, 345B L, 5110B, M325B, W330B, W345B II
320 L, 320B, 320C, 322 L, 322B, 322B L, 322C, 322C FM, 324D L, 325, 325 L, 325B L, 325C, 325C L, 325D L, 329D, 329D L, 329D LN, 345B, 345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, 365B, W345B II
320 L, 322, 322 FM L, 322B, 322B L, 322B LN, 322C, 322C FM, 324D, 324D FM, 324D L, 324D LN
320B, 322B, 322B L, 322B LN, 322C, 322C FM, 325B, 325B L, 325C, 325C FM, 330B, 330C L, 345B II
345B, 345B II, 345B II MH, 345B L, 365B, 365B II, 365B L, TK1051, W345B II
345B II, 345B L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 365B, 365B L, TK1051, W345C MH
345B II, 345B II MH, 345B L, 345C, 345C L, 345C MH, W345B II, W345C MH
322, 322 FM L, 322 LN, 325B, 325B L, M325B
315B L, 317B LN, 318B, 966F II
2060868
HOSE AS
315B L, 317B LN
315B L, 317B LN
2060867
HOSE AS
315B L, 317B LN
315B L, 317B LN
2060866
HOSE AS
315B L, 317B LN, 318C, 319C, 319D, 319D L, 319D LN
315B L, 317B LN, 318C, 319C, 319D, 319D L, 319D LN
2060865
HOSE AS
315B L, 317B LN
315B L, 317B LN
2060864
HOSE AS
315B L, 317B LN
315B L, 317B LN
315, 315B, 315C, 317B LN, 318B, D3C III, D3G, D4C III, D4G, D5C III, D5G
315, 315B, 315C, 317B LN, 318B, 933C, 939C, D3C III, D3G, D4C III, D4G, D5C III, D5G
1515281
HOSE
315, 315B, 315C, 317B LN, 318B, 933C, 939C, D3C III, D3G, D4C III, D4G, D5C III, D5G
315, 315B, 315C, 317B LN, 318B, 933C, 939C, D3C III, D3G, D4C III, D4G, D5C III, D5G
315B, 317B LN, 318B
1355732
HOSE AS
315B, 317B LN, 318B
315B, 317B LN, 318B
1088525
HOSE AS
14H, 14H NA, 315B L, 317B LN, 318B, D7H, D7R
14H, 14H NA, 315B L, 317B LN, 318B, D7H, D7R