Remy 50MT Armature User Manual

Notice

Instruction Sheet

10533715

12OC12 DS06025 REV0

NOTICE

- Only licensed Remy International Inc. product and component parts should be used, and the use of other parts or modifications not

approved by Remy International Inc. will void all applicable warranties. The failure to carefully follow these Installation Instructions, set forth above, will void
all applicable warranties. Delco Remy

is a registered trademark of General Motors Corporation, licensed to Remy International Inc., Pendleton, IN 46064.

50MT™ ARMATURE REPLACEMENT INSTRUCTIONS

NOTE: It is beneficial and possibly necessary to obtain the commutator end (CE) service kit. It is preferable to use new,
undamaged parts.

WARNING!!!

ALWAYS USE PROPER EYE PROTECTION WHEN PERFORMING ANY MECHANICAL REPAIRS TO A

VEHICLE – INCLUDING, BUT NOT LIMITED TO, ANY INSTALLATION AND OR REPAIRS TO THE DELCO REMY STARTING
MOTORS. FAILURE TO USE PROPER EYE PROTECTION CAN LEAD TO SERIOUS AND PERMANENT EYE DAMAGE.

Only perform the mechanical functions that you are properly qualified to perform. Mechanical repairs that are beyond your
technical capabilities should be handled by a professional installation specialist.

FOLLOW ENGINE AND/OR VEHICLE MANUFACTURER'S INSTRUCTIONS CAREFULLY WHEN REMOVING AND
INSTALLING THE STARTER.

DISASSEMBLY PROCEDURES FOR REPLACING ARMATURE

DANGER!!!

ALWAYS DISCONNECT BATTERY GROUND BEFORE REMOVING OR REPLACING CABLES AT THE

STARTER. FAILURE TO DISCONNECT THE BATTERY GROUND CABLE CAN LEAD TO SERIOUS INJURY.

Remove vehicle leads connected to the starter, noting their positions for reinstallation of starter, and remove starter.

Remove the solenoid lead from the ground stud in the CE housing, note position of the ground stud or mark the CE housing &
frame for reassembly.

Remove the six (6) CE screws.

Remove the 3 plugs from the frame to allow removing the three (3) field leads to positive brushes attaching screws for 12V,
24V & 32V models or two (2) field leads to positive brushes attaching screws for 64V models.

Remove the CE housing and armature assembly as a unit. It’s best to remove them together to keep the brushes contained.

Pull the brush assemblies back and contain in that position with the brush springs to release the armature.

Remove the smaller thrust washer from CE of the armature and larger thrust washer from the DE. These washers must be
placed on the new armature.

Depending on usage, replacing the brake washer is recommended. The lever housing and drive assembly must be removed
and reinstalled to replace the brake washer. NOTICE! It is recommended that the lever housing instruction sheet be
obtained from our website, www.delcoremy.com, before removing and reinstalling the brake washer.

REASSEMBLY PROCEDURES FOR REPLACING ARMATURE

1. Apply bearing type grease onto the larger thrust washer and install onto the armature shaft DE and install the smaller brake

washer onto the armature shaft CE.

2. Place the armature commutator into the brush plate cavity and release the brushes.
3. Apply bearing type grease onto CE housing’s outer diameter where the o’ring is seated and apply a small amount of SAE20

oil into the bushing area, being careful not to get any oil on the brushes.

4. Install the CE housing, brush-plate and armature on the starter with the screws, assuring the same position as removed.
5. Attach the three (3) field leads to positive brushes with attaching screws for 12V, 24V & 32V models or two (2) field leads to

positive brushes with attaching screws for 64V models over the plug holes. Torque screws to 2.26-4.52 Nm (20-40 lb in) for
punched holes or 3.62-5.20 Nm (32-46 lb in) for extruded holes. These screws must be carefully aligned to prevent cross
threading.

6. Install the six (6) attaching screws into the CE housing and torque to 16.27-22.03 Nm (144-195 lb in).
7. Install the three (3) plugs to the frame. Torque to 8.13 Nm (72 lb in) min

NOTICE! After repair and reassembly it is necessary, before installation on the engine, to check and adjust pinion

clearance. It is recommended the solenoid replacement instruction sheet, 10500262, be obtained from our website,
www.delcoremy.com.

8. Reinstall starter and connect cables and other leads, as removed.
9. Reconnect the negative (-) cable at the battery.

Technical support: USA 800 854 0076, Mexico 01 800 000 7378, Brazil 0800 703 3526, South America 55 11 2106 6510 or visit
delcoremy.com