Document qkLNy8DRxdR9bmBMJz5M21mgj

irJirvrd by holding blrulu valvr A (Fig 5) oprn until fluid appears, with the rtibhri lube not screwed in plate Hbedir valve is then closed 'I his oper ation should hr performed with n pedal pressure of only a few pounds When removing the shoes from .1 hy draulic brake assc mhly it is best to c lamp die wheel cylinders in order to prevent (hr nretdenlal blowing out of the pistons, making a bleeding operation nrtrssary ()n all hydraulic brake systems only an approved hydraulic fluid should he used If there is any doubt about the purity or quality of the fluid in the lines, it is best to (lush out the entire hydraulic sys tem using a good I8B proof alcohol In some cases, it is netessary to remove the m.islrr and wluri lyhndirs and clean them tlioiooghly, using altohol or brake (hud Inferior brake fluids damage the iiihhri parts of a hydraulii systt iri and it is often neiessaiy to replace the rubber i aps If lhr <) liudi rs have been srnred or pitted, they should /> br hoof <1 to a inuror finish Sometiims this slimier pu < i of lining is placed so that (he open spate is at the toe, as shown, and in other cases the open space is at the heel end of the shoe On some t ars filled with Lockheed I lydrnulic brakes there is only one anchor pm in eai h wheel brake both the foi ward shoe and the reverse shoe in each brake are anchored to (his same pin 1 he turn ing of this eccentric anchor pm controls the position of dir heel c nds of both shoes However, their is no brake lining on the Wheels of hale Model Chrysler Corporation Care Figure 6 Aulomoh*' Raliller (oi Mfislnr Cylinder After adjusting the cams always |)ress the |>iake prdal two or lime tunes after sjiinumg the whc< I bv hand 1 hen check the u hi I tn make sure that it is still free of <11 ag On Lockheed llydr.mhi btnkes, thrrr are sometimes < asi s of sqtir nks caused In binding of the (ops of llir Ui verse Shoes w Ik re the Reverse Shoe lining is the same hngib as the ! nrwntd Slim lining I his sipttak can be chtninand in using a shorter piece of lining mi the Krvrrsr Shop, as shown in Fig 1 heel rnd of the reverse shoes and the ec centric anchor pins air adjusted to obtain ()0S* clearance between the lining and the drum at the heel ends of the forward shoes 'I he only adjusting on the reverse shoes is done by means of thr cams in order tn obtain 010' tleatanre at the toe ends of these shoes On late model Chrysler Corporation cars the front wheel brakes have two For ward Shoes. On these can the rccoinmrndrd clearances arc 007* at the toes and 006* at the heels on all Forward Shoes, and 007' nil around on Reverse Shoes In bleeding these front wheel brakes, bleed the top cylinders first and thru bleed the lower cylinders This biake assembly is shown in I igorr 6A American brakehlok, as well as most other lining manufacturers, recommend a fanlv high friction lining on holli for 10 ward and reverse acting shoes of the Loi khecd Hydraulic brake Figures I and 6A show the rec ntmnencled hi ake lining when roll sloe k is used. Ami rican brakehlok also furnishes brake lining segments in boxed car sets especially prepared for cars equipped with Loeklued Hydraulic Ihakes Ford cars aic equipped with hydraulic brakes which arc very similar to the Lock heed biakcs just described. A left rear 1939-42 l ord brake assembly is illustrat ed in Figure 7 and shows the mechanism which operates the shoes through the (land brake hvrrfor parking nr emer gency purposes. ADJUSTING CAM B v Si?Haa '1 he 1946 Ford brakes have brake shoes which arc self centering at the an chor pins and therefore there is no anchor pin adjustment to be made on these brakes SERVICE HELPS 'I he hand brake lever on all recent Ford passenger car and light trucks nj>rr* ates the brake shoes tu the two rear whr< Is fm parking or emergency pm poses When making service brake adjustments, it is advisable to disconnect the hand brake cables In order to adjust (he hand brake on these vehicles, proceed as follows. 1. Release the hand brake lever com pletely and then place it in the first notch Figure 7 1939 1942 Tord Hydraulic Brake Showing Mechanical Oporalion ol Rear Whoel Brakes lor Parking ADJUSIMLNIS 1 he major and minor adjustments on Ford hydraulic brakes through 1942 models arc made in the same manner as on the Lockheed brake described on page 7. 2. Apply a pressure of about 30 pounds to the brake pedal and hold at nppioxiruatcly this pressure throughout the hand brake adjustment 3 'I ake all slack out of (he hand brake cables and adjust conduits so that cables are exactly the right length. 4 Remove the pressure from the brake pedal and release the hand brake lever completely and check the rear wheels to make sure they do not drag II