MacDon R85, Installation Instructions Manual, Page: 28 / 42

INSTALLATION INSTRUCTIONS
18. Adjust nut (B) to tension the gearbox drive belt.
Tension the belt until plate (C) is just past the slot (D).
19. Lock jam nut (A).
Figure 3.28: Belt Tensioner
20. Windrower headers only: Attach the speed sender to
the P88A branch of the main wiring harness (A).
• For model year 2015, route the P88A branch (B)
around the flange of the gearbox, and then down
through the hole (C) in the top of the speed sensor
bracket.
If the harness cannot reach the speed
sender, connect harness extension (MD #268049).
Secure any excess harness to the main wiring
harness with a cable tie (MD #30753). The harness
extension and cable tie are provided in the kit.
• For model years 2014 and earlier, route the P88A
branch along the side of the frame, and then down
through the hole in the top of the speed sensor
bracket. Secure any excess harness with a cable
tie (MD #30753) to keep it away from the belt. The
cable tie is provided in the kit.
Figure 3.29: P88A Harness Branch Routing –
Model Year 2015
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Revision B