Overview
The ZF 4699.801.247 GK10LD is a precision-engineered gearshift assembly designed for heavy-duty construction machinery transmissions. This OEM genuine part controls the hydraulic clutch engagement sequence within the transmission valve body, directly managing gear selection under high-torque loads. The SKU 4699.801.247 serves as the primary shift actuator in ZF power-shift transmissions, converting electronic control signals into precise mechanical movement for smooth ratio changes. When paired with the 4699001152: GK10LD shift cylinder, this unit ensures consistent pressure modulation during demanding excavation and loading operations.
Symptoms of Failure
- Delayed or harsh gear engagement – Worn internal seals in the 4699.801.247 cause hydraulic pressure loss, resulting in a 2-3 second lag when shifting from neutral to drive under load.
- Transmission oil leaks near the shift housing – Cracking of the GK10LD body or degraded O-rings allows ATF to seep past the 4699101108: HOUSING interface, leaving visible drips on the bell housing.
- Intermittent gear slipping in reverse – Internal spool valve wear within the 4699.801.247 causes the reverse clutch pack to partially disengage during heavy pushing, creating a distinct RPM flare without corresponding machine movement.
- Erratic shift patterns under partial throttle – Contaminated hydraulic fluid accelerates scoring on the shift piston bore, leading to unpredictable upshifts and downshifts during grading operations.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.801.247 |
| Material | High-strength aluminum alloy with hardened steel spool |
| Weight | 1.85 kg (4.08 lbs) |
| Overall Length | 142 mm |
| Mounting Bolt Pattern | 4x M8 on 85 mm centers |
| Operating Pressure Range | 12-18 bar (174-261 psi) |
| OEM Reference | ZF 4699.801.247 |
| Seal Material | Nitrile rubber (NBR) with PTFE backup rings |
Compatibility
This GK10LD assembly is engineered for ZF WG180, WG200, and WG211 power-shift transmissions commonly found in wheel loaders, telehandlers, and excavators from 15-30 ton classes. The 4699.801.247 interfaces directly with the 4699102172: INPUT shaft assembly and the 4699103057: OUTPUT flange, making it critical for models like the ZF 4WG-200 and 6WG-180. Always verify transmission serial number against ZF application charts before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699001152 | GK10LD | Shift cylinder assembly for clutch modulation |
| 4699101108 | HOUSING | Cast aluminum housing enclosing shift mechanism |
| 4699102172 | INPUT | Input shaft with splined torque transfer |
| 4699103057 | OUTPUT | Output flange connecting to driveline |
| 4699105091 | TURNTABLE BEARING | Rotary support bearing for shift housing |
| 0501329881 | HOUSING COVER | Sealing cover for shift assembly access |
| 0630513065 | SNAP RING | Retaining ring for internal shaft positioning |
| 0634306309 | O-RING | Hydraulic seal between housing and cover |
| 0637885612 | BREATHER | Pressure equalization vent for housing |
| 0769100082 | TYPE PLATE | Identification label with serial number |
