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LIGHTING GP-FLOOD 2444025 - Caterpillar

2444025 LIGHTING GP-FLOOD Caterpillar parts 993K
Alternative (cross code) number:
Caterpillar 2444025 LIGHTING GP-FLOOD

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Compatible equipment models: 2444025:

WHEEL LOADER  993K   Caterpillar
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DUMP VALVE OPERATION (Clutch Engaged Position)
12. Plunger. 13. Passage (to clutch piston). 14. Inlet passage.With the control valve in the REVERSE position, the hydraulic oil moves through tube assembly (2), through hydraulic passage (6) in the spider assembly which goes to the dump valve (4) for the reverse clutch. The dump valve sends the pressure oil to the piston for the reverse clutch, which engages the reverse clutch. Dump valve (4) is same as dump valve (11) and operates in the same way to engage or release the clutch.
12. Plunger. 13. Passage (to clutch piston). 15. Outlet passage.When the control valve is moved to NEUTRAL position, oil is not sent to a clutch. With no oil pressure to hold plunger (12) toward the clutch, the centrifugal force caused by clutch rotation moves plunger (12) out. This opens oil passage (13) to a clutch piston and to outlet passage (15). As the oil from the piston goes through the outlet passage, springs in piston and cylinder assembly move the piston away from the clutch plates and the clutch releases.Control Valve in Neutral
CONTROL VALVE (Neutral Position)
1. Control valve body. 2. Directional spool valve. 3. Springs. 4. Port to oil cooler. 5. Oil inlet port. 6. Relief valve. 7. Check valve.The control valve is fastened at the rear of the marine transmission. This valve sends and controls the flow of oil to the transmission. The pressure control section of the valve gives automatic control of the pressure, with a slight delay effect to give a smooth flow of power as it goes from NEUTRAL to either FORWARD or REVERSE.With the engine running and the directional valve (2) in the NEUTRAL position, the oil flow through the control valve is as follows:Oil flows from the filter to inlet port (5), around the stem of relief valve (6) and through a passage to the NEUTRAL chamber of directional spool (2). The oil is stopped at the directional spool. The oil pressure in the control valve goes up and opens check valve (7). The oil fills the chamber below the relief valve. When the oil pressure in the chamber is higher than the pressure of springs (3), relief valve (6) opens. The oil flows out through port (4) to the oil cooler.Control Valve in Forward Position
With the engine running and directional valve (6) in the forward position, the oil flow through control valve body (1) is as follows:Oil from the filter flows to inlet port (14), around the stem of relief valve (16) and through a passage to directional spool valve (6). The oil flows around the spool valve and out port (9) to the forward clutch. The oil also moves ball check valve (11) against its seat and goes on to main check valve (5). The oil moves check valve (5) against stop (3). The oil flows through small holes in the four plugs in the bore of the check valve, through orifice (4) and through small holes

Caterpillar parts catalog:

Caterpillar parts catalog
993K Wheel Loader Z9K00001-UP (MACHINE) POWERED BY C32 Engine

Parts lighting Caterpillar catalog:

834H, 836H, 836K, 854K, 988H, 990K, 992K, 993K
M313D, M315D, M316D, M318D, M318D MH, M322D, M322D MH
320B, 322B LN, 322C, 325B L, 330B L, 330C, 330C L
3406C, 3508, 3516, PM3412, PM3508, PM3512, PM3516
924G, 924GZ, 924H, 924HZ, 928HZ, 930G, 938G II, IT28G, IT38G II
120H NA, 12H NA, 135H, 135H NA, 140H NA, 143H, 14H NA, 160H NA, 163H NA, 16H NA
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