HARLEY-DAVIDSON 5 Speed Transmissions 1984 – 1999 EVO / 5 Speed & 1999 – 2006 Twin Cam Installation Instructions


Filed Under (Harley Davidson) by admin on 26-11-2010

Remove Original Parts From Vehicle. 2.1 Obtain a small tube of Loctite® #262 (red) for use later. 2.2 Drain the transmission oil. 2.3 Remove the clutch adjustment cover (left side). 2.4 Remove rear exhaust header pipe (cross over exhaust pipe). 2.5 Remove the muffler support bracket. 2.6 Remove the clutch release cover (right side). 2.7 Remove clutch push rod and oil slinger. To be disassembled and modified later. 2.8 Remove the two nuts from the main (rear) and counter (front) transmission shafts. 2.9 Remove the transmission bearing housing (puller available from Champion Sidecars). To be replaced with new reverse gear transmission bearing housing (Trap Door). 2.10 Cover the exposed gears in the transmission with a cloth in preparation to cut the shifter fork shaft. 3 Install New Main and Countershaft Gears NOTE: Gears and Tapered Split Rings are factory matched sets. Do not mix!. 3.1 Locate the shifter fork rod, mark fork rod flush at transmission case and pull out 1/4″. Figure 1 3.2 Cut the shaft at the mark and push it back in. The shaft end MUST NOT stick out of the transmission case. If the shaft is in deeper, fill the hole with silicone to prevent the shaft from moving in and out. NOTE: Shifter fork is made of non-tempered metal and may be cut with a hacksaw or Dremel® cutting tool. 3.3 Important: Remove stock spacers from main and counter shafts. Spray with silicon remover (Brake-Clean) then, using supplied cleaning pad, clean shafts, new counter and main shaft gears and tapered lock rings (inside and outside) Figure 1 3.4 With motorcycle in neutral, pull both the shafts out and simultaneously push the OEM outermost gears in until seated completely to expose the shoulders of both shafts. The countershaft shoulder should be flush with the gear face. For the main shaft the gear would “hang over” the shoulder a small bit. Figure 2 3.5 Apply supplied Champion Super-Lock retaining compound to the inside and outside surfaces of the large gear tapered split ring, to the inside of the new countershaft gear (large gear) and to the transmission countershaft (the forward most shaft). 3.6 Install new countershaft gear to the transmission countershaft. Insert tapered split ring (tapered end first) into the countershaft gear. Install ring seat tool and spring to counter shaft and new countershaft gear. Torque ring seat tool to 40 ft-lb’s. Figures 3 and 4

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