Blue Ox Exhaust Brakes
WM728
Blue Ox retarder devices provide downhill retarding horsepower as well as cold weather protection for the engine in both highway & idling modes. This is a bolt on retarder unit designed to mate with certain naturally aspirated or super charged diesel engines. This unit fits the four bolt, 4" exhaust flange popular on some Cummins 855 cubic engines.
Complete installation kits include
- WM728 AK2 - 12 volt manual type foot operated.
- WM728 AK4 - 12 volt automatic type throttle rod actuated.
- WM729 AK6 - 12 volt automatic type electronic engine controlled.
Item |
Part Number |
Quantity |
Description |
Item |
Part Number |
Quantity |
Description |
|
1 |
728-01 |
1 |
Housing |
15 |
3325X2 |
1 |
Hex Nipple |
|
2 |
728-02 |
1 |
Shaft |
16 |
728-40 |
1 |
Hair Clip |
|
3 |
728-03 |
1 |
Butterfly |
17 |
728-16 |
3 |
Piston Ring |
|
4 |
728-09 |
2 |
Rivet Assy. |
18 |
728-55 |
1 |
Snap Ring |
|
5 |
728-04 |
1 |
Bracket Assy. |
19 |
728-28 |
2 |
Mounting Screw |
|
6 |
728-05 |
1 |
Cylinder Assy. |
20 |
728-29 |
2 |
Lock Washer |
|
7 |
728-06 |
1 |
Lever |
21 |
728-35 |
1 |
Shaft Nut |
|
8 |
728-08 |
1 |
Clevis Assy. |
22 |
728-29 |
1 |
Lock Washer |
|
9 |
1 |
Lock Nut |
23 |
728-36 |
1 |
Stop Screw |
||
10 |
1 |
Clevis Pin |
24 |
728-37 |
1 |
Stop Nut |
||
11 |
728.23 |
1 |
Breather |
25 |
728-06 |
2 |
Gasket |
|
12 |
728-17 |
1 |
Bushing |
26 |
728-25 |
4 |
Screw 1/2 X 1.5" |
|
13 |
728-18 |
1 |
Bushing |
27 |
728-26 |
4 |
Screw 1/2 X 1.75" |
|
14 |
728-19 |
1 |
QR Valve |
28 |
728-41 |
8 |
Lock Nut 1/2" |