Document ppnQVw4Oq9B5DD8kxxXYaq4X

T2-01-32.'' V ' GeneroT Hydraulic-Broke Service-' rt> . installed. If a piston U seized in the' bare, a new - caliper homing is required!./ -- Refer lo Pari 12-20 for disc brake rofsr resurfacing procedure., not replaced. If the brake drums are htat . spotted, indicating an overheated condition, they should be replaced. s. Inspect all other brake parts arid replace any that ` ore worn or damaged- . - . y .1. DISC BRAKE SERVICE PRECAUTIONS * 6. Inspect the brake drum and, if necessary, refinish. V v if/ `.VtJ;-- l.r Greaie or an)' other foreign material muft be kepi 'off Ihe liningi surfaces of the rotor, and external hirfacej.'of the bub during service operations. in handling Ihe rotor and caliper ottembliet, avoid deformation of the broke rotor and nicking or scratching'of brake linings.- " ' -2.--- If-a-caliper piston is removed far. any reason, Ihe piston seal must be replaced...,. . .. 3. During removol and Installation of a wheel - assembly, exercise care not to interfere with and . damage Ihe caliper splash shield or the bleeder - ' screw fitting. . .. The maximum inside braking surface diameter Is shown on each brake drum (Fig. 33). If ifc, masimum inside braking surface diameter showa on the drum is exceeded either by wear, or refinithing, the drum must be replaced. Refer la Port 13-03 far refinishing. BRAKE BOOSTER; ` . ' :": '' - Check the booster operation or noted under Power - _ brake Functional Test. II the broke booster is damoged ' or inoperative, replace it with a new boaster. The brake booster is serviced only as an assembly, including Ihe check valve. .' i. I'.;:., C Front'wheel bearing end play-is critical and must v be within spe/eifications. BRAKE TUBING c- 5?'-Bo sure"lKe v'ehklcls centered'oh IhehollfbeIon ' * >: -If a section'of .the'brake htbiog becomes damaged,; -v servicing any front end components, fa avoid the entire lection should be replaced with tubing of Ihe ' * ' bending or damaging Ihe rolot splash shield on full. same type, sice, shape and length. Copper tubing _ . right .or left wheel turns. . should not be used In a hydraulic system. When' 6:- Riding of the brake pe'dal (common on TeTl-fobl application!)'must be ovoided during vehicle bending broke tubing lo fit underbody or rear pxle cantouri, be careful not to kink or crack the tube. operation: . ' " .................. HYORAUUC UNES . ,.7,..-..The wheel, ond tire, musl be removed .separately .. from the broke rotor, unlike drum brakes where the r' Oouble wall steel tubing it uied throughout tho'broko - wheel, tire and drum can be removed as a unit: system with the exception of Ihe flexible hoses 'at the 005227 Do' nblraHempt-.ftficleanior-teslora bfl- er-g(*o$e.',y.-.-/f<>(*)- whMls.gnd.gtjherear aide housing brake tube . soaked brak'e linings. When contaminated linings' ' connection! ' are found, brake Unipgs must be raploeed in complete dxle'refi; **" ' Always bleed the applicable primary or seco'ndary brake system after'primary or" 9. ' On Foirmont/Zephyr only, always replace rubber - Cqliper insulators, and plastic sleeves when replacing linings. Da nal lubricate Ihe slide pins. secondary brake system hose or line replacement. Centralize the pressure differential valve after bleeding the system. DRUM BRAKES 1. c Remove Ihe wheel from the drum, ond remove the drum os outlined in Part 12-02. i Use an Industrial vacuum cleaner lo remove all dust I from the backing plates and Interior'of the brake drums. ^ 3. Inspect the brake shoes far excessive lining wear or shoe damage. If the Doing is worn within 1/32 - Inch of the rivet heads orif Ihe shoes ore damaged, they must be replaced. Replace any.fining that has been contaminated with oil, grease or brake fluid. Replace fining In axle sets. Prior to replacement of * ' lining, the drum diameter should be checked to determine that the brake drum broking surface diameter It within specification. If the braking surface diomater exceeds specification, Ihe drum must be replaced. 4. Check the condition of brake shoes, retracting springs, hold-dawn springs, and drum far signs of overheating. If the lhaet bare a slight blue coloring, indicating overheating, the retracting and hold-down springs should be replaced. Overheated springs lose their pull and could causa Ihe new lining la wear prematurely, If Alt brake tubing should be double flared properly to provide good leakproof connections. Clean the brake tubing by flushing with clean brake fluid before installation. When connecting a lube to a hose, tube connector, or brake cylinder, lighten the tube fitting nut'to specified torque with Mtlbar Tool 11)2-144 or equivalent. BRAKE HOSE . A flexible brake hose should be replaced if it shows signs of softening, cracking, or othar damage. When installing a new front brake hose, position the hate to ovoid contact with other chassis parti. On oS vehicles except- foirmont/Zephyr, ploce a new copper gasket over Ihe hose fitting and thread Ihe base assembly into Ihe front wheel cylinder or caliper. Falrmonl/Zephyr front hose does not require a cooper gasket and is reusable. Engoge Ihe opposite end of ihe hose to the bracket on (he frame. The while stripe on the hose should show no evidence af twisting. Install (he horseshoe-type retaining dip, and connect the lube to the hose with (he tube fitting nut. \ /97f Co-' ft* -IV ( / e/l-iJr - 3 i PFIOOtJCED SY FORD