Overview
The ZF 4108.015.059 P 5300 is a critical OEM genuine hydraulic control component engineered for heavy-duty construction machinery transmissions. This precision-machined part regulates oil flow and pressure within the valve body assembly, directly influencing clutch engagement and gear selection smoothness. As a factory-specified replacement, the SKU 4108.015.059 ensures exact dimensional and metallurgical compliance with original ZF tolerances. It sits within the transmission’s hydraulic circuit, interfacing with the 4108101066 HOUSING and the 4108201298 HOUSING to maintain sealed pressure channels. Without this component, the transmission cannot achieve proper shift timing or torque converter lockup.
Symptoms of Failure
- Erratic or delayed gear engagement – When the 4108.015.059 wears internally, hydraulic pressure drops, causing hesitation when shifting from neutral to drive or reverse.
- Transmission oil leaks at the valve body interface – Cracking or seal degradation in this part leads to visible fluid seepage around the housing mating surfaces, often mistaken for a pan gasket failure.
- Harsh or slipping shifts under load – A worn control spool inside the 4108.015.059 cannot modulate clutch pack pressure, resulting in jarring upshifts or power loss during excavation.
- Erratic oil level readings – Internal leakage past this component can aerate the fluid, causing the 0501215601 OIL LEVEL GAGE to show inconsistent or false readings.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4108.015.059 |
| OEM Reference | ZF P 5300 |
| Material | High-grade aluminum alloy with hardened steel spool |
| Weight | 1.45 kg (3.2 lbs) |
| Dimensions (L x W x H) | 185 mm x 95 mm x 55 mm |
| Sealing Surface Finish | Ra 0.4 µm |
| Operating Pressure Range | 8–22 bar (116–319 psi) |
| Temperature Range | -30°C to +120°C |
Compatibility
This OEM genuine part is designed for ZF WG-series powershift transmissions commonly used in wheel loaders, dozers, and telehandlers. It is compatible with the following ZF transmission models: WG180, WG200, WG210, and WG310. The 4108.015.059 also fits select variants of the Ecomat 2 and Ecomat 4 series where the valve body uses the P 5300 control cartridge. Always verify the 0730365280 TYPE PLATE on your transmission housing to confirm model compatibility before installation.
During replacement, technicians should inspect the 0501325471 SEALING RING for wear and replace it simultaneously to prevent cross-threading. The 4108301475 INPUT SHAFT and 0750116277 BALL BEARING should also be checked for end-play, as excessive movement can damage the control bore. Use 0630502039 RETAINING RING and 0630531064 RETAINING RING to secure the assembly, and seal the port with 0636302014 SCREW PLUG after filling.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101066 | HOUSING | Encloses the valve body and directs oil flow |
| 4108201298 | HOUSING | Secondary housing for clutch pressure regulation |
| 0501215601 | OIL LEVEL GAGE | Provides dipstick measurement of transmission fluid |
| 0501325471 | SEALING RING | Prevents fluid bypass at the control bore |
| 0730365280 | TYPE PLATE | Identification plate for transmission model |
| 4108301475 | INPUT SHAFT | Transfers engine torque to the gear train |
| 0750116277 | BALL BEARING | Supports input shaft radial loads |
| 0630502039 | RETAINING RING | Axial lock for bearing assembly |
| 0630531064 | RETAINING RING | Secondary axial retention for shaft |
| 0636302014 | SCREW PLUG | Seals hydraulic test ports |
