10. MODIFICATION PROCEDURE FOR M870 BRAKE (BENDIX) (Continued).
Install New Emergency Relay Valve PN 104561 on Front Air Reservoir Tank.
The new emergency relay valve comes with a new bracket supplied. The bracket will not be
needed for this installation. Dispose of bracket as described in paragraph 8d.
Refer to Figure 7.
(1) Obtain new emergency relay valve, PN 104561.
To prevent mixup between valves, before installing new relay valve, check part number of
valve. Both emergency relay valves look identical but have different internal components.
(2) Remove masking tape from threads of pipe nipple (1), reducing bushing (2), two straight adapter (3), top
elbow (4), and tee (5). Thoroughly clean nipple, bushing, two straight adapters, elbow, and tee.