After looking around for a rebuild kit for the M37 fuel pump I got a prompt reply back from Tom at Then and Now Automotive, you can read Tom’s reply below. My fuel pump turned out to be an AC 9804J and was more in need of a good cleaning due to rust in the fuel lines than a rebuild.
The fuel pump after it was rebuilt and installed. | | As you can see there was a lot of rust present. |
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Then and Now Automotive can be reached at:
Phone: 781-335-8860
Outside U.S.: 01-781-335-8860
Fax: 781-335-1925
Then and Now Automotive
447 Washington St.
Weymouth Ma. 02188
mailto:oldpartstom@aol.com
Dear Matt,
Thank you for your kind inquiry. We make the fuel pump kits for the M37 and all sorts of other fuel pumps, but in order to provide the right kit, we need to know the number that is stamped into the pump you want to rebuild. The pump number is on the edge of one of the ears that the bolts go through to hold the pump onto the motor.
The M-37 Power Wagon and the M-43 Ambulances tend to have AC pumps with either # 9615 or 9804 stamped in. These are pumps equipped with a priming lever, and the pumps are also equipped with fittings to run submerged (briefly).
With that number we can send the right kit- the kits contain the parts for both the fuel and vacuum sides- the gasket to block, rocker arm pin and bushing and spring; oil seal and retainer (for the vacuum side only- on the fuel side there is no seal, just the seal retainer acting as a spring seat) ; diaphragm assemblies (of die cut buna-n-nitrile rubber cloth reinforced with nylon, with upper and lower steel protector plates and the pull rod riveted through the center- watch out for crappy flea market kits which expect you to somehow take your old diaphragms apart and re-stake them!) check valves and check valve gaskets (10 check valves in this pump!) and pulsator diaphragm on fuel side, and vacuum side bowl gasket and fiber washer.
The kits are $ 69.50 because of the extra check valves and the pulsator diaphragm. Shipping and handling is $ 12.50 by UPS inside the continental US. We also offer rebuilding services on the pump at $ 145.00 for the labor and kit parts. We take the usual credit cards, and ask that you telephone or fax in your important information for an order. We cover our phones from Monday to Friday in Eastern time at 781-335-8860 from 8am to 5pm and at 781-335-1579 from 10am to 7pm> The fax is 781-335-1925 anytime.
Hope this helps, Tom