MWO 5-2330-360-23-1
I1. INSTALLATION PROCEDURE M870A1 BRAKE MOD (BENDIX) (Continued).
I.
Install Middle Axle Air Lines.
Refer to Figure 32
(1) Connect the middle axle right air chamber service air hose (1), to the new relay valve left rear delivery elbow
(2) adapter.
(2) Connect the middle axle left air chamber service air hose (3), to the new relay valve right rear, delivery port
elbow (4) adapter.
m.
Install Rear Air Reservoir Emergency Air Lines and Fittings.
Refer to Figure 32
(1) Run a new emergency air line (3/8" tube) (5) from the spring brake valve left tee (6), rear connection,
rearward along the left main frame rail through support brackets. Proceed to the rear air reservoir tank relay emergency
valve (7) lower 45 degree elbow.
(2) Remove tubing nut and sleeve from the spring brake valve, left tee (6), rear connection. Install tubing
Figure 32.
(3) Recheck routing and length of the new emergency air line (5) to the rear air reservoir tank relay emergency
valve (7). Mark the length and cut the new emergency air line at the relay emergency valve location.
(4) Remove tubing nut and sleeve from the relay emergency valve (7) left lower 45 degree elbow. Install tubing
nut sleeve, and tubing insert (8), PN 246089, on the relay emergency valve (7) end of the new emergency air
line (3/8" tube) (5). Connect new emergency air line (5) to the relay emergency valve (7), lower 45 degree
elbow.
33
