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NO POWER AT LADDER TIP OUTLET
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TM-5-4210-233-14P-1 Twin Agent 4x4 Firefighting Truck Model No. CM-KFT-B Manual
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Lowering the Truck - TM-5-4210-233-14P-1_276
TM 5-4210-233-14&P-1 SECTION V.  UNIT MAINTENANCE PROCEDURES 4-9.  GENERAL MAINTENANCE PROCEDURES.  This section describes general procedures that apply to all maintenance tasks detailed in this manual. To avoid repetition, these general procedures will not be repeated elsewhere in the manual. 4-9.1.  General Removal and Disassembly Instructions a. Troubleshooting.  Before  removing  any  item,  refer  to  the  troubleshooting  table.  This  ensures  that  faults are isolated to a particular component. b. Cleanliness.   Work   areas   must   be   kept   clean.   This   avoids   contamination   of   internal   parts.   This   is especially  true  for  areas  where  controls,  valves,  cylinders,  or  other  hydraulic  or  air  system  parts  are disassembled. c. De-energize  and  De-pressurize. Before  removing  any  part  of  electrical,  hydraulic,  pneumatic,  or  foam systems  ensure  the  system  is  not  energized  or  pressurized  (e.g.  disconnect  batteries  or  relieve  all pressure from air system by opening drain valves). Ensure that all controls are in the OFF position before starting any removal procedure. d. Preparation. Study the task description before disassembling or removing any item. This reduces job time as all tools and equipment will be available and procedures will have been noted. e. Work   Space.   Ensure   there   is   sufficient   clearance   to   remove   or   disassemble   a   particular   part. Disassemble adjacent parts as necessary to provide reasonable working clearance. f. Lifting. Use a hoist, jack, or other aid when lifting heavy parts. Lifting devices should be positioned and attached  to  the  part  to  remove  all  strain  from  mounting  hardware  before  part  is  removed.  Never  work under a part which is supported only by a lifting device. Always support that part on maintenance trestles or other supports before starting work. g. Lifting Truck. In certain cases it will be necessary to raise the truck so that all tires clear the ground. The following procedure describes a safe method of lifting the truck. (1) Drain water tank to reduce truck weight. (2) Park truck on level, hard surface. Position gear selector to N (neutral) and apply parking brakes. (3) Chock wheels of opposite axle. (4) Place 1O ton hydraulic jack beneath differential. Raise the jack until tires clear the ground. (5) Place  maintenance  trestles  beneath  axle,  one  on  each  side  of  differential.  If  truck  is  to  be supported  by  frame,  and  tires  still  need  to  clear  the  ground,  raise  the  truck  high  enough  to compensate for leaf spring sag. (6) Carefully lower truck onto maintenance trestles. Be sure maintenance trestles are adjusted to the same height and are of sufficient capacity to carry truck weight. (7) Repeat steps 4 through 6 to raise other axle. 4-146

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