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SPRING ASSEMBLIES
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Cleaning, Inspection and Repair - TM-5-4210-230-14P-1_966
TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 As  the  spring  assembly  deflects  these  leaves  come  in contact providing increased capacity and stiffness. Fig. 5  Progressive Spring Assembly MAINTENANCE Lubrication For    lubrication    intervals,    refer    to    Operator's Manual.  For types of lubricants recommended, refer to LUBRICATION, Section CTS-2412. SERVICING Although    the    exact    servicing    procedures    are different  for  each  type  of  spring  assembly  and  spring assembly  application,  the  basic  procedures  are  similar. The following is a general outline for servicing all spring assemblies. Removal 1.   Place floor jack under truck frame and raise truck sufficiently to relieve weight from spring to be removed. 2.   Remove shock absorbers where used. 3. Remover   U-bolts,   spring   bumper   and retainer or U-bolt seat. 4.   Remove lubricators (not used on springs equipped with rubber bushings). 5.   Remove  nuts  from  spring  shackle  pins or bracket pins. 6.   Slide spring off bracket pin and shackle pin. 7.   If spring is rubber bushed, bushing halves may be removed from each side of spring and shackle eye. Installation Before reassembly, all shackle bolts, U-bolts, etc. should be cleaned and lubricated for proper installation. While  the  actual  installation  procedures  will  vary with each spring type, the pivot end of spring is usually fastened  to  frame  bracket  first.    Shackle  end  can  then be fastened by aligning shackle to other frame bracket. When  installing  U-bolts  for  securing  axles,  do  not  final tighten   until   springs   have   been   placed   under   normal load.          See     TORQUE     CHART     for     U-bolt     torque specifications.  Spring  failures  may  occur  at  the  center bolt hole if U-bolts become loosened.  These bolts must be kept tight and checked frequently. Spring pins should also be checked periodically. Disassembly 1.   Clamp spring end in vise and remove old bushing from spring eye. 2.   Reposition spring in vise so that assembly will be clamped near center. 3.   If bolted type rebound clips are used, remove nuts, bolts and spacers; where clinch type rebound clips are used, bend tabs of clips up, being careful not to break them. Heating clips with torch will help avoid breakage. 4.   Remove nut from spring center bolt. CTS-2680S  Chapter I  Page 4 PRINTED IN UNITED STATES  OF AMERICA

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