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CHAPTER NINE
3. Remove the rear suspension, track and front axle as described in Chapter Fourteen. 4. Loosen the hose clamps and remove the 2 hoses from inside the engine compartment. 5. Remove the seat. 6. Loosen the hose clamps and remove the 2 hoses at the top of the tunnel. 7. Turn the machine on its side. 8. Remove the bolts holding the front heat exchanger to the frame and remove it. 9. Drill out the rivets holding the side and rear heat exchanger to the frame and remove them. 10. Inspect the hoses as described in this chapter. ll. Installation is the reverse of these steps. Note the following: a. Use new rivets when installing the side and rear heat exchanger. b. Replace worn or damaged water hoses. c. Replace fatigued or damaged hose clamps. d. Refill the cooling system as described in Chapter Three. HOSES
Hoses deteriorate with age and should be replaced periodically or whenever they show signs of cracking or leakage. To be safe, replace the hoses every 2 years. Loss of coolant will cause the engine to overheat and result in severe damage. Whenever any component of the cooling system is removed, inspect the hoses(s) and determine if replacement is necessary.
Replacement
Hose replacement should be performed when the engine is cool. 1. Drain the cooling system as described under Coolant Change in Chapter Three. NOTE Make sure to note the routing and any clamps supported by the hoses.
2. Loosen the hose clamps from the hose to be replaced. Slide the clamps along the hose and out of the way. 3. Twist the hose end to break the seal and removefrom the connecting joint. If the hose has been on for some time, it may have become fused to the joint. If so, cut the hose parallel to the joint connections with a knife or razor. The hose can then be carefully pried loose with a screwdriver. CAUTION Excessive force applied to the hose during removal could damage the connecting joint.
4. Examine the connecting joint for cracks or other damage. Repair or replace parts as required. If the joint is okay, remove rust with sandpaper. 5. Inspect hose clamps and replace as necessary. 6. Slide hose clamps over outside of hose and install hose to inlet and outlet connecting joint. Make sure hose clears all obstructions and is routed properly. NOTE
If it is difficult to install a hose on a joint, Inspection 1. With the engine cool, check the cooling hoses
for brittleness or hardness. A hose in this condition will usually show cracks and must be replaced. 2. With the engine hot, examine the hoses for swelling along the entire hose length. Eventually a hose will rupture at this point. 3. Check area around hose clamps. Signs of rust around clamps indicate possible hose leakage.
soak the end ofthe hose in hot water for approximately 2 minutes. This will soften the hose and ease installation.
7. With the hose positioned correctly on joint, position clamps slightly back away from end of the hose. Tighten clamps securely, but not so much that the hose is damaged. 8. Refill cooling system as described under Coolant Change in Chapter Three. Start the engine and check for leaks. Retighten hose clamps as necessary.