1942 - 1947 Chevrolet Shop Manual



	4-36

	Removal 1. Raise the car with a chain hoist and disconnect the spring from the hanger and spring seat. 2. Drill a 3/16" hole through the four rivets which attach the hanger to the frame. Enlarge this hole with a 5/16" drill for depth of the rivet head only. Cut off the remainder of the rivet head with a cold chisel. 3. Remove the hanger, then cut off the rivets flush with the underside of the frame side rail. (Do not attempt to drive out the rivets without cutting them off or the hole in the bottom plate of the side rail may be distorted.) 4. Drive out the remaining portion of the rivet. Replacement There are right and left hangers which may be identified as follows: The spring eye portion of the hanger is closer to one side than the other, Fig. 68. The hanger must be assembled to the side rail with the side containing the spring eye toward the outside, as shown in Fig. 68. Bolt the hanger to the side rail, using the following parts: Part No. 369627 4 Special Heat-Treated Bolts 5/16-18x1-1/8" Part No. 121367 4 Lockwashers 5/16" Part No. 120376 4 Hex Nuts 5/16"-18 After the bolts are drawn up tight, peen over the end to prevent the nut loosening up. PLAIN BUSHED SHACKLE This type of shackle is used at the rear of the rear springs on all 3/4, and 1-1/2-ton trucks. It consists of a heavy malleable shackle bushed at the upper end to serve as a bearing for the upper shackle pin which passes through the shackle and the spring hanger, and a lower shackle pin which passes through the shackle and the spring eye bushing. A "pinch" bolt at the spring hanger keeps the upper pin from turning while the lower pin is anchored in the same way by the "pinch" bolt at the shackle. The upper shackle pin may be removed by first removing the "pinch" bolt and then driving the pin out from the inside, using a drift through the hole in the frame side rail for that purpose. The shackle pin at the front of the rear spring may be removed by driving the pin from the spring eye bushing, through the hole in the frame side rail, and into the "alligator jaw" of the frame cross member. The lower shackle pin at the rear of the rear spring may be removed at the same time the	spring eye bushings are removed, by disassembling the rear spring from the spring shackle and pressing the pin from the spring eye on an arbor press. NOTE—On all 3/4-ton trucks the rear springs are 2" wide, while on the 1-1/2-ton truck they are 2-1/2" wide. In order to use the same shackle bracket on both trucks it is necessary to use 1/2" spacers on all 3/4-ton models to fill this space. These spacers are located on the inner side of the spring. SPRING COVERS The rear springs on all passenger cars are equipped with metal spring cavers. Should it ever become necessary to replace the spring covers, a special service spring cover is used. These covers are composed of several sections and can be clinched in place without removing the springs or straightening them out. Service spring covers are stocked in the warehouses under two part numbers—603154 for coupe and cabriolet only, and 603153 for all other models. REAR SPRING SEATS Passenger Cars The rear springs of all passenger cars are completely insulated from the axle by the means of a rubber core. At each seat, a bracket is welded on

		Fig. 69—Passenger Rear Spring Seat the front side of the housing, Fig. 69. An eye bolt passes through this bracket and the spring seat in a manner similar to the way the front end of the rear spring is mounted. A steel spacer sleeve is used to prevent collapsing the walls of the axle bracket when the eye bolt and nut are pulled down tight. Between the spacer sleeve and the spring seat is a rubber bushing. Rubber washers at each end complete the insulation. The mounting effectively dampens out objectionable road noise at its source and, in doing so, prevents it from telegraphing through the springs and