1942 - 1947 Chevrolet Shop Manual



	3-22

		not available, an ordinary coarse threaded tap of the proper size can be threaded into the bushing, and with a bar whose diameter is slightly less than the diameter of the hole and 1 inch longer than the distance through the steering knuckle, drive out the tap and bushing. To install new bushing, round edges with a file; place in proper position with respect to knuckle to align oil holes, noting that the oil hole is nearer one end than the other. Press into place with a vise or arbor press, taking care to start bushing straight into the hole. Do not hammer on bushing or otherwise deform it. After the bushings are in place, they should be carefully reamed to size, using a reamer long enough to reach through both bushings at once, or preferably a reamer having a long pilot bar which will just pass through the opposite bushing while one is being reamed, the cutting flutes also being long enough to finish both bushings together. Fig. 48. NOTE—When oversize kingpins are installed it is necessary to ream the steering knuckle bushings first with the reamer used for fitting a standard size kingpin, and then with the special oversize reamer to fit the .010" or .020" oversize kingpin, to provide .002" clearance between the kingpin and bushing.
	Fig. 46—Reaming Steering Knuckle Bushings REMOVE AND INSTALL STEERING KNUCKLE BUSHINGS, I-1/2-TON TRUCKS A bushing puller should be used in removing steering knuckle bushings. If a tool of this kind is

	FRONT AXLE SPECIFICATIONS



	FRONT SPRINGS

	1/2 AND 3/4-TON LONG WHEELBASE TRUCK The front springs on the 1/2 and 3/4-ton long Wheelbase truck are flat under load, contributing to improved steering geometry by reducing to a minimum the fore and aft movement of the front axle and attaching parts. The rear eye of the front spring is of the "Berlin" type, meaning that the horizontal center is approximately level with the main leaf center. 3/4 AND 3/4-TON SPECIAL TRUCK The front springs of the 3/4 and 3/4-ton special truck are "two-stage" type, or in other words the spring rate with the truck light is considerably	lower than when loaded. The advantage of this type spring is that the rebound or "throw" is much less when the truck is light and the resistance to "bumping through" is greater when the truck is loaded. The change in spring rate from the low to the higher rate takes place at or near the rated load capacity of the truck. 154-TON TRUCK The front spring on the 1-1/2-ton truck is a low camber spring of high load carrying capacity. The rear eye is also of the "Berlin" type, with a second leaf which partially wraps the main eye for additional safety. Front Chassis Spring specifications are shown in the following chart: