2100 YRM 1328
ASSEMBLE CAUTION To prevent damage to sealing surfaces, use brass tools when installing seal and O-ring. NOTE: Lubricate all internal parts of the cylinder with clean hydraulic oil during assembly. NOTE: For lift trucks manufactured before August, 2012, perform Step 1 through Step 7 for lift truck models •
GLC/GDC60VX, GLC/GDC70VX (GC/GLC/ GDC135VX, GC/GLC/GDC155VX) (C879, D879, E879, F879)
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GLP/GDP60VX, GLP/GDP70VX (GP/GLP/ GDP135VX, GP/GLP/GDP155VX) (C878, D878, E878)
Fork Positioner Cylinder Repair 6. If the cylinder head end was removed during disassembly, replace cylinder head end O-ring and apply Loctite® 242 (Blue) to threads. Clamp head end in vice and tighten cylinder shell to 270 N•m (200 lbf ft). 7. Lubricate new seals, O-rings and wear rings with O-ring lube or hydraulic fluid. NOTE: Fork carrier lug bearings snap into their respective grooves. Bronze bearings consist of three separate segments. 8. Install new seals, O-rings, wear rings and fork carrier lug bearings as shown in Figure 36. 9. Twist seal into "figure 8" or half circle shape see Figure 38.
1. Install new O-rings, backup rings, rod seal, and rod wiper onto cylinder rod retainer. See Figure 34.
CAUTION To prevent damage to cylinder rod, DO NOT clamp on cylinder rod sealing surface. 2. Place cylinder rod in soft-jawed vise and install piston onto rod. See Figure 34. 3. Apply Loctite®242 (Blue) to threads of piston nut. Install piston nut onto cylinder rod. Tighten piston nut to 75 N•m (55 lbf ft). See Figure 34. 4. Install new piston seal onto piston. See Figure 34. 5. Install cylinder rod retainer onto cylinder rod. See Figure 34. NOTE: For lift trucks manufactured after August, 2012, perform Step 6 through Step 15 for lift truck models •
GLC/GDC60VX, GLC/GDC70VX (GC/GLC/ GDC135VX, GC/GLC/GDC155VX) (C879, D879, E879, F879)
•
GLP/GDP60VX, GLP/GDP70VX (GP/GLP/ GDP135VX, GP/GLP/GDP155VX) (D878, E878)
NOTE: If necessary, use 400-grit emery cloth to break any sharp edge on the piston, retainer and cylinder shell chamfer angles and threads to prevent seal damage.
1. 2. 3. 4. 5.
SEAL ROD RETAINER PIN PUNCH FLAT BRASS O-RING TOOL
Figure 38. Installing Retainer Internal Seals for Lift Truck Models GLC/GDC60VX, GLC/GDC70VX (GC/GLC/GDC135VX, GC/GLC/GDC155VX) (E879, F879) and GLP/GDP60VX, GLP/GDP70VX (GP/GLP/GDP135VX, GP/GLP/GDP155VX) (E878) Manufactured After August, 2012
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