• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Figure 2-2.  Safety boom stands
MAIN WINCH CIRCUIT (MAIN HYDRAULIC SYSTEM) - TM-9-2350-256-34-2_42

TM-9-2350-256-34-2 Recovery Vehicle Full Tracked; Medium M88A1 (NSN 2350-00-122-6826) Manual
Page Navigation
  23    24    25    26    27  28  29    30    31    32    33  
TM 9-2350-256-34-2 Section II.  TROUBLESHOOTING NOTE Information in this section is for use by direct support and general support(DS/GS) maintenance personnel in conjunction with  and  as  a  supplement  to  the  troubleshooting      section      in      the  organizational  maintenance  manual.    It  provides continuation  of  instructions  where  a  remedy  in  the  organizational  manual  refer  to  DS/GS  maintenance  personnel  for corrective action. 2-6. Scope a. This section contains troubleshooting or malfunction information and tests for locating and correcting most of the  troubles  which  may  develop  in  the  Recovery  Vehicle.    Each  malfunction  or  trouble  symptom  for  an  individual component, unit, or system is followed by a list of tests or inspections necessary for you to determine probable causes and suggested corrective actions for you to remedy the malfunction. b. This  manual  cannot  list  all  possible  malfunctions  that  may  occur  or  all  tests  or  inspections,  and  corrective actions.    If  a  malfunction  is  not  listed  (except  when  malfunction  and  cause  are  obvious),  or  is  not  corrected  by  listed corrective actions, you should notify higher level maintenance activity or major unit commander. c. Table  2-3  lists  the  common  malfunctions  that  you  may  find  during  the  operation  or  maintenance  of  the Recovery Vehicle or its components.  You should perform the tests/inspections and corrective actions in the order listed. NOTE Before you use this table, be sure you have performed all normal operational checks.  If you have a malfunction which is not listed in this table, notify higher level maintenance activity or major unit commander. 2-6.1. Adjustment of Main Winch Capability Refer to paragraph 3-10.1. 2-6.2. Adjustment of Hoist Winch Capability Refer to paragraph 3-21.1. Table 2-3.  Troubleshooting MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION MAIN WINCH CIRCUIT (MAIN HYDRAULIC SYSTEM) CAUTION Close auxiliary power unit emergency winch control valve for main hydraulic system operation. 1. MAIN WINCH WILL NOT OPERATE Step 1. Attempt operation of hoist winch, boom spade.  If hoist winch.  boom and spade operate, proceed to step 9.  If hoist winch, boom and spade do not operate.  proceed to step 2. Step 2 Inspect mechanical transmission drive shaft.  If not rotating, repair or replace.  Refer to TM 9-2350-256- 34-1, Medium Recovery Vehicle, M88A1. Step 3. Inspect mechanical transmission for broken or restricted hose.  Replace mechanical transmission hose.   Refer to TM 9-2350-256-20, Medium Recovery Vehicle, M88A1. Step 4.    Inspect mechanical transmission output shaft.  If not rotating.  proceed with mechanical transmission clutch pressure check.  Install pressure gage in mechanical transmission clutch pressure hose. For location, refer to TM 9-2350-256-20,  Medium Recovery Vehicle, M88A1.  With engine operating at 1800 rpm.  and power control valve lever in ON position, normal operating pressure is 150 ± 10 psi a. Remove mechanical transmission and main hydraulic pump assembly.  Refer to TM 9-2350-256-34- 1, Medium Recovery Vehicle.  MS8A1. b Replace mechanical transmission Refer to paragraph 3-16. Step 5. Test for defective power control valve Remove hose no.  66 from valve.  With power control valve level in ON position and mechanical transmission input shaft rotating, oil shouldflow from valve port. Replace power control valve.  Refer to TM 9-2350-256-34-1.  Medium Recovery Vehicle, MS88A1. Step 6. Inspect main hydraulic pump for broken or damaged shaft coupling. a. Remove mechanical transmission and main hydraulic pump assembly.  Refer to TM 9-2350-256-34- 1, Medium Recovery Vehicle, M88A1. b. Repair or replace shaft coupling.  Refer to paragraph 3-16. Change 5  2-6







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.