Description
A4688-G - EATON FULLER TRANSMISSION SLAVE VALVE - 1/8" NPT
PART NUMBER(S):
Fleet Products: A4688-G | Replaces OE: Eaton Fuller: A4688, A3991 | Automann: 174.4688 | International: 422159C91, 422159C92
DESCRIPTION:
Model: Eaton Fuller Transmission Slave Valve
Vehicles: Heavy-duty trucks equipped with compatible Fuller 6613, 9513, 12510, 12513, 12515, or 14909 manual transmissions
• Valve Type: Pneumatic transmission slave valve
• Supply Ports: Two 1/8"-27 NPT
• Delivery Ports: Two 1/8"-27 NPT
• Control Port: One 1/8"-27 NPT
• Exhaust Port: One 1/8"-27 NPT
• Mounting: Transmission-mounted
• Construction: Metal valve body
• Included Component: Mounting gasket
• Function: Directs air pressure to control transmission range shifting
• System Application: Compatible Fuller-style range-shift pneumatic circuits
Applications:
Designed for compatible Eaton Fuller manual transmissions requiring a transmission-mounted slave valve. The valve responds to the control signal and routes air through the supply and delivery circuits to operate the transmission range-shift mechanism.
CROSS-REFERENCE(S):
A-4688, A4688NP, A4688P, A4688G, A-3991, A3991X, FUL A4688, FUL A3991, FULA4688, FULA3991, 3088-A4688, 3088-A-4688, 3088A4688, 3088-A3991, 422-159-C, 422159C, 0587-A4688, DMA4688, EF36770, GSV-3677, 3676, 3677, 36770, M13A4688, 14612, TRV4688, WAF237, S-3291, S3291, FUR-A-4688, VTC-2913, SM-3780, KA4688, 1738352B, 35530409, 6WA4688, 48A4688P
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Depressurize the transmission air circuit before removing or installing the valve.
✔ Mark all supply, delivery, control, and exhaust lines before disconnecting them.
✔ Confirm all six connections use the correct 1/8"-27 NPT fittings.
✔ Install the supplied mounting gasket on clean, undamaged mating surfaces.
✔ Pressurize the system and verify correct range shifting, exhaust operation, and no air leakage.
Warranty Information
