FIGURE 13 - END COVER TO HOUSING TORQUE PATTERN
4.Install the assembled long check valve body, o-ring, and spring in the end cover delivery check valve port so that the o-ring rests on its seat in the end cover and the spring is visible.
5.Install the delivery check valve plug that was removed during the disassembly, into the air dryer end cover. See Figure 5. Torque the plug to 130–170 inch pounds.
Drop In Air Dryer Makeup Line Assembly
1.Install the adapter and the attached 90 degree fitting in the air dryer. Take care that the replacement adapter and attached fitting is in the same approximate position as the original. See Figure 11.
LOWER
BRACKET
2-1/8"SPECIAL WASHER
END | | ← |
| |
COVER | EXTRA |
| LONG |
| BRACKET |
| CAP SCREW |
FIGURE 14 - LOWER BRACKET INSTALLATION
2.Install the check valve and fitting, taking care that the replacement is in the same approximate position as the original.
3.Install the makeup line and tighten the tubing nuts at both ends while preventing the 90 degree fittings from turning. Tighten the nuts sufficiently to prevent air leakage, but do not over tighten.
Air Dryer Assembly
1.Install the desiccant cartridge o-ring in its groove in the end cover. Using a light coat of lubricant (included in kit), lubricate the bottom of the desiccant cartridge in the area that will contact the o-ring and end cover. Screw the desiccant cartridge into the end cover until contact is made between it and the o-ring. Using a strap or chain wrench positioned 2–3 inches from the bottom of the cartridge, turn the desiccant cartridge clockwise 180–225 degrees beyond the position where initial contact was made between the cartridge and end cover o-ring. Torque should not exceed 50 ft. lbs.
2.Install the end cover outer housing o-ring on the shoulder in the end cover. Place the housing over the desiccant cartridge and align the holes. Install the six 3/8" cap screws, locknuts and twelve special washers, making certain they are in the proper position as marked during disassembly. The two longer 3/8" cap screws will be used to secure the air dryer to its mounting bracket. Tighten the six cap screws and nuts in a star pattern in a fashion similar to Figure 13; depending on lower bracket location. Torque to 270–385 in. lbs.
Note: The two remaining bolt holes in the end cover and two 3/8" cap screws must be the ones marked during disassembly to assure proper orientation of the ports and adequate length of the cap screws.
INSTALLATION
1.Install the assembled Bendix® AD-9®or AD-9®IPC air dryer back onto the vehicle by slipping it into the upper mounting bracket. Align the two unused holes in the end cover with the bottom mounting bracket such that the bottom bracket supports the air dryer. The air dryer end cover should rest on the bracket. Using the remaining two 3/8" cap screws, four special washers, and two locknuts, secure the air dryer to the lower bracket. Tighten, then torque the two remaining cap screws to 270–385 in. lbs. See Figure 14.
2.See Figure 7, illustrations A and B, to determine the mounting bracket type.
Illustration A Style - Attach the mounting strap to the air dryer and secure it to the mounting saddle with the 5 /16" X 4-1/2" hex cap screw and nut. Torque to 80–120 in. lbs.
Illustration B Style - Place the isolator between the upper bracket and air dryer. Secure the air dryer to the upper bracket with the mounting strap. Tighten the adjusting nut to 50–60 in. lbs.
