Remy REPLACING 50DN ALTERNATOR SHAFT SEAL AND O-RING - Manual

Instruction Sheet
10524487
04OC13 REV4
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.
©
2012 Remy International, Inc. All rights reserved 1
DO NOT APPLY ANY
PRESSURE TO SEAL
3.2” Minimum
IMPORTANT!
REPLACING 50DN ALTERNATOR SHAFT SEAL AND O-RING
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
®
ALTERNATORS. FAILURE TO
USE PROPER EYE PROTECTION CAN LEAD TO SERIOUS AND PERMANENT EYE DAMAGE.
Only perform 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 OR VEHICLE MANUFACTURER’S INSTRUCTIONS FOR REMOVING THE ALTERNATOR FROM THE
ENGINE, IF NECESSARY, AND REINSTALLING.
DISASSEMBLY INSTRUCTIONS:
NOTICE! Do not use an impact wrench to remove or install the pulley nut on the alternator shaft. The impact action of the wrench can
damage shaft threads.
1. Mark outer side of pulley so it can be put back on the shaft with the same side out after removing and replacing shaft seal and o-
ring.
2. Hold pulley with a strap-type wrench and use a breakover bar with socket to remove pulley nut. Remove washer and pulley from
shaft.
3. Carefully remove old press-in seal to avoid possibly damaging the DE Housing.
4. Remove old steel spacer and old o-ring from shaft.
5. Carefully remove any paint or Loctite left in the bore and on frame.
ASSEMBLY INSTRUCTIONS FOR DIRECT PRESS-IN SEAL SERVICE PACKAGE KIT (DELCO REMY P/N 10524486):
THERE ARE TWO (2) APPROVED OPTIONS FOR INSTALLING THE SEAL KIT
NOTICE! The use of anti-sieze products on the rotor shaft when reinstalling the pulley is not recommended.
Option 1
1. Lubricate the new o-ring with 1948791 bearing lubricate or equivalent.
2. Install new o-ring onto groove on the shaft.
3. Apply Loctite 242 or equivalent to outside diameter (OD) of press-in seal.
4. Align new press-in seal, being careful not to cut the seal on the shaft splines.
5.
Obtain “seal install tool” or utilize a 50DN pulley with an OD no smaller than 3.2 inches. Place seal install tool or pulley with flat
surface onto shaft against the seal.
CAUTION: BE SURE NOT TO USE AN UNDERSIZED PULLEY (OD LESS THAN 3.2 INCHES) OR ONE WITHOUT A FLAT
MACHINED SURFACE. FAILURE TO DO SO MAY RESULT IN DAMAGE TO SEAL DURING INSTALLATION.
Follow
Option 2 if you do not have the seal install tool or a proper pulley.
6. Place washer and pulley nut on shaft. Hold pulley with a strap-type wrench and tighten pulley nut on shaft until seal is fully seated.
7. Remove pulley nut, washer, and install tool or pulley from shaft.
8. Ensure seal is fully seated by checking the gap around the flange.
9. Install new steel spacer onto the shaft and into the seal.
10. Install pulley, washer and nut. Be sure pulley is installed with same side out as before removal.
Hold pulley with a strap-type wrench and tighten pulley nut to 290 Nm (215 lb ft)
FLANGE
L
SEAL
Pulley
SHAFT
WASHER
SHAFT NUT
APPLY LOCTITE AROUND
SEAL OUTSIDE DIAMETER
SEAL INSTALL TOOL
(P/N 10527085)