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M37 Brakes

Part numbers:

Wheel cylinders left (Driver’s) - NAPA 3595
Wheel cylinders right (Passenger) – NAPA 3596

Flex lines front - NAPA UBP4000 (3 required)
Flex line rear - NAPA UBP4900 (1 required)
These lines do not have the line armor like the originals.

Master cylinder – NAPA UP 544

Ordering from one of the parts suppliers here will save you money compared to NAPA’s prices and they can also provide brake shoes.

Brakes schematic:

Brakes

My brake shoe anchor bolts were seized so I used a C Frame Press readily available from Harbor Freight to press them out.  The press shown below made fairly quick work of removal.

CFramePress

the anchors are held in by 5/8”-18 nuts with lock washers, I replaced those since the originals were fairly rusty.

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M37 Rear Hub Rebuild

Part numbers for the bearings and races:

Inner Bearing – Timken 28682
Outer Bearing – Timken 2984
Inner Bearing Race – Timken 28622
Outer Bearing Race – Timken 2924

Inner Seal – National 417485
Outer Seal – National 6077

Exploded view of the rear axle for reference.

RearAxle

I used a 2 jaw puller to get the inner seal out of the hub, it’s a lot easier than using a drift punch from the other side.  It also reduces the chances of damaging the bearing or race.

Indiana 225

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M37