K 1500 Truck 4WD V8-350 5.7L (1986)
NOTICE:
To obtain + 10.0 caster, use the appropriate caster wedge.
Caster Wedges
in Degrees
Part Number
Quantity
2
15624676
2 per vehicle
3
15624677
2 per vehicle
4
15624678
2 per vehicle
Warranty Labor Operation and Labor Time Information:
T7720
Preliminary inspection and adjustments including
verification road test
1.2 Hrs.
Add:
To adjust "toe" setting
.3 Hr.
T7725
Preliminary inspection and adjustments, repair
procedure "A", includes two road tests
3.7 Hrs.
Add:
To adjust "toe" setting
.3 Hr.
To reface rotors
.8 Hr
To replace rotors
.5 Hr
T7730
Preliminary inspection, adjustments, repair
procedures "A" and "B", includes three road
tests
6.3 Hrs.
Add:
To adjust "toe" setting
.3 Hr.
To reface rotors
.8 Hr
To replace rotors (during Procedure "A")
.5 Hr.
To replace rotors (Including road test) in Procedure C
2.7 Hrs.
To rotate rotors from side to side (Including road test)
in Procedure C
2.2 Hrs.
Service Recommendation
CHART 1
Good contact is important between the friction surfaces of the brake system. With semi-metallic linings, it is important to have good refinished rotor
surfaces. A poor finish on one rotor can result in reduced brake effectiveness. This may result in a brake lead condition if installed opposite a properly
finished rotor. The original equipment new disc brake rotors have an initial surface finish of 20 to 60 micro inches and all have a non-directional swirl
pattern.
SERVICE RECOMMENDATION
^
Rotor refinish requires a micro-inch surface refinish equivalent to the new vehicle rotor specification.
^
The recommended procedure for obtaining this finish is as follows:
Rough Cut
Finish Cut
Spindle Speed
20ORPM
20ORPM
Depth of cut per side
.005"
.002"
Tool Cross Feed Per Rev.
.006" - .010"
.002" Max.
Vibration Dampener
Yes
Yes
Swirl Pattern - 120 GRIT
No
Optional*
*Duplication of new rotor and smoother finish for best initial brake effectiveness.
When installing new rotor from service stock "do not" refinish the surface as these parts are to recommended finish.
When refinishing brake rotors the following is important:
^
The brake lathe must be in good working order and have capability to produce the intended surface finish.
^
Use correct tool feed and arbor speeds. Too fast a speed or too deep a cut can result in a rough finish.
^
Cutting tools must be sharp.
