Overview
The ZF 6053.308.348 CONTROL COVER is a critical OEM genuine component designed to seal and protect the valve body assembly within heavy-duty ZF construction machinery transmissions. This precision-machined cover houses the shift control mechanism and directs hydraulic fluid flow to the clutch packs. As a structural interface, it mounts directly over the transmission housing, ensuring that internal pressures remain stable during high-torque operations. The SKU 6053.308.348 is engineered to ZF’s original specifications, guaranteeing exact fitment and long service life in demanding environments such as wheel loaders, graders, and dump trucks.
Symptoms of Failure
- Hydraulic oil leaks around the transmission control area: When the control cover gasket degrades or the cover itself warps, pressurized transmission fluid seeps past the mating surface, leaving visible puddles under the vehicle.
- Erratic gear engagement or delayed shifting: A cracked or distorted control cover disrupts pilot pressure to the shift valves, causing hesitation or harsh engagement when moving from neutral to drive or reverse.
- Contaminated transmission fluid with metal particles: Internal wear of the cover’s bearing surfaces can shed debris into the oil circuit, accelerating damage to the HOUSING (4108101057) and HOUSING (4108201177) assemblies.
- Low transmission pressure warnings on the dash: A compromised control cover allows pressure loss across the valve body, triggering diagnostic trouble codes and reduced machine performance.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 6053.308.348 |
| Material | High-grade cast aluminum alloy |
| Weight | 2.8 kg (6.2 lbs) |
| Overall Dimensions (L x W x H) | 310 mm x 180 mm x 65 mm |
| OEM Reference | ZF 6053.308.348 |
| Bolt Torque Specification | 25 Nm (18.4 lb-ft) |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This control cover is primarily designed for ZF WG180 and WG200 series powershift transmissions commonly found in construction machinery. It also fits select WG150 and WG250 variants used in articulated dump trucks and telehandlers. Always verify the casting number on your existing cover before ordering. For complete assembly, this part integrates with the BEARING COVER (4108301304) and requires a SCREW PLUG (0636302056) for the fill port.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4108101057 | HOUSING | Main transmission housing, supports gear train |
| 4108201177 | HOUSING | Rear housing section, houses output shaft |
| 0636302056 | SCREW PLUG | Seals oil passages in the control cover |
| 4108301304 | BEARING COVER | Encloses input shaft bearing |
| 4108306173 | GASKET | Seals control cover to transmission housing |
| 0750110040 | SHAFT SEAL | Prevents oil leakage at rotating shafts |
| 6053108155 | CONTROL COVER | Alternate control cover variant for WG200 |
| 0636010188 | HEXAGON SCREW | M10 x 30 mm mounting bolt for cover |
| 0636010192 | HEXAGON SCREW | M12 x 35 mm mounting bolt for housing |
| 0634303852 | O-RING | Seals the screw plug in the control cover |
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