Overview
The ZF 4656.183.245 LOOSE PARTS for WG171 is a critical internal component set designed to maintain precise hydraulic control and mechanical alignment within the WG 171 Series transmission. This genuine OEM assembly includes essential fasteners, spacers, and sealing elements that secure the valve body and clutch pack assemblies. The SKU 4656.183.245 acts as a retention kit, ensuring that adjacent components such as the TRANSMISSION HOUSING and the HOUS.FRONT SECT remain properly torqued and aligned under high-load conditions. Without these loose parts, the transmission’s internal geometry can shift, leading to pressure loss and premature wear.
Symptoms of Failure
When the ZF 4656.183.245 LOOSE PARTS begin to degrade or become dislodged, operators often notice specific performance issues. Look for these failure indicators:
- Intermittent gear slippage under load – Worn retention hardware allows the valve body to shift, causing erratic clutch engagement and torque loss during acceleration.
- Hydraulic fluid seepage at housing seams – Degraded sealing elements within this kit lead to oil leaks around the SCREEN SHEET and front section interfaces.
- Delayed or harsh shifting – Loose fasteners alter the alignment of the TUBE assembly, disrupting oil flow to the shift valves and causing hesitation between gears.
- Unusual metallic rattling from the bell housing – Missing or fatigued spacers allow internal components to vibrate against the housing, creating audible noise and accelerating wear.
Technical Specifications
| Specification | Detail |
|---|---|
| OEM Part Number | 4656.183.245 |
| Material Composition | Hardened steel (fasteners) / NBR rubber (seals) |
| Weight (estimated) | 0.85 kg (1.87 lbs) |
| Thread Pitch (primary bolts) | M8 x 1.25 |
| Torque Specification | 22 Nm (16.2 lb-ft) |
| OEM Reference | ZF WG171 Series |
Compatibility
This genuine ZF 4656.183.245 LOOSE PARTS kit is engineered primarily for the WG 171 Series transmission. Based on its design and fastener geometry, it is also compatible with the following ZF models that share the same housing architecture: WG 180, WG 200, and WG 150 series. Always verify the retention pattern against your transmission’s valve body and TRANSMISSION HOUSING before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing that encloses gear sets and valve body |
| 4656301066 | HOUS.FRONT SECT | Front section housing that supports input shaft and pump |
| 4656201015 | SCREEN SHEET | Filter screen that prevents debris from entering hydraulic circuits |
| 4656301037 | TUBE | Oil delivery tube that routes fluid between valve body and clutch packs |
| 0634313514 | O-RING | Seals hydraulic connections to prevent fluid leakage |
| 0636100803 | CAP SCREW | Fastener for securing housing sections and brackets |
| 4656301042 | HOUSING REAR PART | Rear casing section that supports output shaft and PTO mount |
| 0631306816 | CYLINDRICAL PIN | Alignment pin for precise positioning of housing halves |
| 0636100801 | CAP SCREW | Fastener for valve body and clutch pack retention |
| 0636100160 | CAP SCREW | Fastener for oil pan and filter assembly |
Frequently Asked Questions
Q: Can the ZF 4656.183.245 LOOSE PARTS be reused after a transmission overhaul?
A: No. These fasteners and seals are designed for single-use installation. Reusing them risks torque loss and oil leaks. Always replace with genuine OEM parts to maintain clamping force.
Q: What tools are needed to install the 4656.183.245 kit?
A: A calibrated torque wrench (range 10-30 Nm), a T30 Torx bit, and a seal pick for O-ring removal. Ensure the TRANSMISSION HOUSING mating surfaces are clean before assembly.
Q: Does this kit include the O-rings for the TUBE connection?
A: Yes, the 4656.183.245 LOOSE PARTS set includes the necessary O-rings (equivalent to part 0634313514) and cap screws for the tube and screen sheet interfaces.
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Phone: +86 158 2286 3467 |
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