W0113176
Figure 2 — Cooling System Supply and Return Connection — MP7 Engines
Key Qty. Part No. Description
1 1 21038748 Pipe, stub assembly, coolant return
2 1 20566808 Ring, sealing
3 2 946173 Flange screw, M8 x 1.25 - 20 mm long
4 1 21092290 Pipe, stub assembly, coolant supply
5 1 1547252 Ring, sealing
6 2 946440 Flange screw, M8 x 1.25 - 16 mm long
7 1 948645 Flange locknut, M8 x 1.25 mm long
8 1 977976 Clamp
9 1 965558 Bracket, coolant return support
Note: On GU models equipped with a fuel heater and engine coolant is used to heat the fuel, these connections provide the
flow of coolant to the fuel heater and cannot be used for in-transit heat.
Mack Body Builder Instructions CHU, CXU, GU, TD, MRU, LR
USA139046859 Date 5.2017 Body Builder; Engine, MP7, MP8, and MP10 Page 38 (43)
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