Disassembly & Reassembly
- Remove oil strainer. Remove bolts, retaining upper body, lower body and separator plate together. Remove upper body. Remove separator plate. Note location of check valves, springs relief ball (valve). See Figure and Figure .
- Remove side plates as necessary. Remove components being serviced. See Fig 1 and Fig 3 . To reassemble, reverse disassembly procedure. Ensure springs are installed to proper position. See VALVE BODY SPRING SPECIFICATIONS table. Torque upper-to-lower valve body bolts in sequence to specifications. See Fig 2 .
VALVE BODY SPRING SPECIFICATIONS
| Application | Free Length In. (mm) | |
|---|---|---|
| Orifice Check Valve (All Applications) | .610 (15.49) | |
| Pressure Modifier Valve | ||
| Chrysler Conquest (1988-89) & Mitsubishi Starion (1988-89) | .772 (19.60) | |
| Mazda B2200-B2600 (1990) W/F2 EGI, G6 Engine MPV (1988-89) & MX-5/Miata (1990) | .610 (15.50) | |
| RX7 (1989-90) & 929 (1988-90) | .780 (19.80) | |
| Mazda Pickup and All Nissan (Except 200SX W/CA20E Engine) | .728 (18.50) | |
| Nissan 200SX W/CA20E Engine | .803 (20.40) | |
| Pressure Regulator Valve | ||
| Chrysler Conquest, Mitsubishi Starion (1988-90), All Mazda & Nissan (Except 300ZX Turbo) | 1.693 (43.00) | |
| Nissan 300ZX Turbo | 1.531 (38.90) | |
| Second Lock Valve (All Applications) | 1.319 (33.50) | |
| Servo Orifice Check Valve - Nissan 200SX (1988) | .610 (15.49) | |
| Solenoid Downshift Valve (All Applications) | .866 (22.00) | |
| Throttle Back-Up Valve | ||
| Mazda Pickup (1990) W/G6 Engine | 1.173 (29.80) | |
| RX7 (1989-90) | .720 (18.30) | |
| Mazda MX-5/Miata (1990) & Pickup (1988) Nissan Pathfinder/Pickup (1988-89) W/Z24i Engine 300ZX Turbo (1988-89) & Van (1988) | 1.417 (36.00) | |
| Chrysler Conquest, Mitsubishi Starion (1988-89) & All Other Mazda & Nissan | 1.252 (31.80) | |
| Throttle Relief Check Valve | ||
| Chrysler Conquest & Mitsubishi Starion (1988-89) | .984 (25.00) | |
| Mazda RX7 (1989-90) & 929 (1988-89) | 1.504 (38.20) | |
| 929 (1990) | 1.465 (37.20) | |
| All Other Mazda & Nissan (Except 300ZX Turbo) | 1.055 (26.80) | |
| Nissan 300ZX Turbo | .980 (24.89) | |
| 1-2 Shift Valve | ||
| Chrysler Conquest, Mitsubishi Starion & Nissan 300ZX Turbo | 1.114 (28.30) | |
| Mazda MPV (1989-90) | 1.102 (28.00) | |
| MX-5/Miata (1990) | 1.059 (26.90) | |
| RX7 (1989-90) & 929 (1988-90) | 1.039 (26.40) | |
| B2200-B2600 (1988-90) | 1.260 (32.00) | |
| Nissan Pathfinder/Pickup W/VG30i Engine | 1.157 (29.40) | |
| 200SX W/CA20E Engine | 1.309 (33.25) | |
| All Other Mazda & Nissan | 1.260 (32.00) | |
| 2-3 Shift Valve | ||
| Chrysler Conquest (1988-89) & Mitsubishi Starion (1988-89), Nissan Pathfinder/Pickup (1988-89), 200SX (1988) & Van (1988), Mazda B2200-B2600 (1990) W/F2 EGI & MX-5/Miata (1990) | 1.614 (41.00) | |
| Mazda B2200-B2600 (1990) W/G6 Engine & Nissan 300ZX (1988-89) | 1.654 (42.00) | |
| Mazda B2200-B2600 (1990) W/F2 Carb Engine & Other B2200-B2600 | 1.244 (31.60) | |
| MPV (1989-90) | 1.177 (29.90) | |
| RX7 (1989-90) & 929 (1988-90) | 2.268 (57.60) | |
| Nissan 300ZX Turbo (1988-89) | 1.543 (39.20) | |
| 3-2 Timing Valve | ||
| Mazda B2200-B2600 (1989), MX-5/Miata (1990), RX7 (1988), Nissan 300ZX (1988-89) & Pathfinder/Pickup W/VG30i Engine | .913 (23.20) | |
| Mazda MPV (1989-90) & Nissan 200SX (1988) | .815 (20.70) | |
| Mazda RX7 (1989-90) & 929 (1988-90) | 1.555 (39.50) | |
| 3-4 Shift Valve | ||
| Mazda MPV (1989-90), B2200-B2600 (1990) W/G6 Engine & Nissan All (Except Pathfinder/Pickup (1988) | 1.193 (30.30) | |
| Mazda MX-5/Miata (1990) | 1.543 (39.20) | |
| B2200-B2600 (1989), B2200-B2600 (1990) W/F2 EGI | 1.013 (25.75) | |
| B2200-B2600 (1990) W/F2 Carb Engine | .994 (25.25) | |
| RX7 (1988) | .984 (25.00) | |
| RX7 (1989-90) & 929 (1988-90) | 1.583 (40.20) | |
| B2200-B2600 All Others | 1.004 (25.50) | |
| Nissan Pathfinder/Pickup (1988) | 1.128 (32.50) | |
| N-R Reducing Valve | ||
| Mazda RX7 (1989-90) & 929 (1988-90) | .571 (14.50) | |
| Back-Up Control Valve | ||
| Mazda RX7 (1989-90) & 929 (1988-90) | .839 (21.30) | |
| N-R/2-3 Accumulator Valve | ||
| Mazda RX7 (1989-90) | 2.984 (75.80) | |
| 929 (1988-90) | 3.248 (82.50) | |
| N-D Accumulator Valve | ||
| Mazda RX7 (1989-90) | 1.709 (43.40) | |
| 929 (1988-90) | 2.512 (63.80) | |
| 1-2 Reducing Valve | ||
| Mazda RX7 (1989-90) & 929 (1988-90) | .768 (19.50) | |
| 1-2 Accumulator Valve | ||
| Mazda RX7 (1989-90) | 2.465 (62.60) | |
| 929 (1988-90) | 3.071 (78.00) | |
| Manual Detent Valve | ||
| Chrysler Conquest (1988-89) & Mitsubishi Starion (1988-89) | 1.276 (32.40) | |