Description
288746-G PP-3 AUTO TRIPPER PUSH/PULL VALVE
PART NUMBER(S):
Fleet Products: 288746-G (New) | Replaces OE: Bendix 288746, 061-288746X, 288746N, 060-288746N, 278821, 279579, 284387, 284387X, 279159, 280723, 280756, 280829, 280930, 282077, 283051, 284170, 284730, 284786, 284836, 284895, 2991112, 288746CX, 288746RX, 288746X, BEN-288746, BW279159, BX279159, OR288746X, 288746 BXR, 288746 BXW, 288746BXR, R288746, OR288746, 288746R | Automann 170.288746, 170288746 | Mack 20QE378P3, 745-288746N, 745-288746, 20QE3111, 745-279159, 745-283051, 745-284895, 745-287056, MAK745-288746 | Volvo 3915333, 3918833 | Wabco 961 793 001 0 | Meritor R955288746, R955288746N, R955288746X, TDAR955288746N | Euclid EBN288746N, E-BN288746N, E-SLA25600, EBN288746X | Newstar SA145, S-A145, BER-288746 | Velvac 034017, 034017VEL, 34017 | World American WA288746 | Tramec Sloan 401179 | Tectran 14473, TV288746TEC, TV288746 | PAI LPP5591, 5591, 55910, EM55910, LPP-5591, PAI LPP-5591, PAI EM55910 | Navistar BAN288746, BX288746, ZAC288746 | Freightliner BW288746 | Dayton AV288746 | Keene K288746 | EXCO 30X3148
DESCRIPTION:
Model: Bendix PP-3 auto tripper push/pull control valve
Vehicles: Mack, Volvo, Freightliner, Navistar and heavy-duty tractor applications using compatible Bendix PP-3 / TP-3 tractor protection air brake systems
• PP-3 dash-mounted push/pull control valve with automatic tripper function
• No delivery ports at top of valve
• Primarily used to control TP-3 tractor protection valves in Pre-121 tractor air brake systems
• Tripper exhausts at 30 psi and charges above 50 psi
• Plunger trips at 40 psi and charges manually
• Supply ports: 3 x 1/8 inch NPT/PT
• Delivery ports: 3 total; 2 plugged and 1 x 1/4 inch NPT/PT
• Exhaust port: 1/4 inch NPT/PT
• Valve mounting thread: 7/8-20
• Button and mounting nut are not furnished with this valve
Applications: This valve is used with compatible two-line tractor protection systems where automatic tripper operation is required. The tripper piston helps prevent manual override during emergency trailer brake application, supporting proper tractor protection valve function.
CROSS-REFERENCE(S):
RL3548DA02, VTC-145A, BA145GRP, SM-3319PB, 3507110, BAR288746, PL-288746, PL288746, GN288746
A cross-reference listing means this part is a suitable replacement for the part numbers listed.
IMPORTANT INSTALLATION NOTES:
✔ Verify supply, delivery and exhaust port sizes before connecting air lines.
✔ Dash button and mounting nut are included; transfer or replace them separately if required.
✔ After installation, confirm tripper exhaust, charge function and plunger operation at the specified pressure ranges.
✔ Check all air line fittings for leaks and confirm trailer protection valve operation before returning the vehicle to service.
Warranty Information
