Overview
The ZF 0730.112.601 SHIM (SKU: 0730.112.601) is a precision-engineered OEM genuine component designed to establish critical axial clearances within ZF heavy-duty transmission assemblies. This thin, hardened steel shim sits between the differential housing and the crown wheel or bevel gear set, allowing technicians to fine-tune gear backlash and preload. By absorbing manufacturing tolerances and preventing metal-to-metal contact, this shim ensures that the 2099109002: DIFFERENTIAL rotates smoothly under extreme torque loads. Without the correct shim thickness, the entire gear train can suffer from accelerated wear, making the 0730.112.601 a vital part for any transmission rebuild or overhaul.
Symptoms of Failure
When the ZF 0730.112.601 shim becomes worn, crushed, or corroded, operators will notice distinct performance issues. Look for these specific failure symptoms:
- Excessive gear backlash and clunking: A worn shim allows the 2099364014: CROWN WHEEL to shift axially, creating a loud “clunk” when shifting between forward and reverse.
- Oil leaks from the axle housing: Incorrect shim stack height can misalign the differential housing, breaking the seal between the housing and the transmission case.
- Premature bearing failure: Loss of preload from a collapsed shim causes the 2099209001: DIFFERENTIAL bearings to overheat and spall.
- Vibration during load: A loose shim creates uneven contact patterns on the bevel gears, leading to driveline vibration under heavy load.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0730.112.601 |
| Material | Case-hardened spring steel (DIN 1.3505 equivalent) |
| Inner Diameter | 112.0 mm |
| Outer Diameter | 145.0 mm |
| Thickness | 0.60 mm (nominal) |
| Weight | 0.045 kg |
| OEM Reference | ZF 0730.112.601 |
| Surface Finish | Ground, deburred edges |
Compatibility
This shim is specifically engineered for ZF’s heavy-duty powershift and planetary axle series. It is commonly found in the following transmission models:
- ZF WG180 series (WG180, WG181)
- ZF WG200 series (WG200, WG201)
- ZF WG250 series (WG250, WG251)
- ZF HP500 series (HP502, HP504)
- ZF Ergopower (16S-109, 16S-151)
Always verify the shim stack height against the service manual when replacing the 2098309010: DIFFERENTIAL HOUSING or any associated gear set.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2099109002 | DIFFERENTIAL | Distributes torque between axle shafts |
| 2099364014 | CROWN WHEEL | Transfers power from pinion to differential |
| 2099209001 | DIFFERENTIAL | Complete differential assembly (variant) |
| 2098309010 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 2098309009 | DIFFERENTIAL HOUSING | Alternative housing casting |
| 2098309031 | AXLE BEVEL GEAR | Drives the differential side gears |
| 2098309030 | AXLE BEVEL GEAR | Matching bevel gear for opposite side |
| 2098309032 | DIFFERENTIAL BEVEL GEAR | Internal gear for differential action |
| 12883200682 | THRUST WASHER | Reduces axial friction on gear faces |
| 0635332059 | BALL BEARING | Supports rotating shafts in the housing |
