TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 • ·Materials/Parts: This heading lists only mandatory replacement materials or parts (gaskets,O- rings sealant, etc.). To replace other unserviceable parts, refer to TM 9-2320-280-24P for requisition data. If no mandatory replacement materials/parts are required, this heading will not be used. For our task we need three lockwashers and a gasket. NOTE If you think that you need more help to adequately or safely complete a task, perhaps as the result of unusual conditions, etc., alert your supervisor and ask for help. • Personnel Required: The number of personnel needed to perform a task. If only onemechanic is required, this heading will not be used. • Manual References: Those TMs needed to complete the task. • Equipment Condition: Notes the conditions that must exist before starting the task. For water pump replacement, the engine oil filler tube, inlet hose, water pump pulley and thermostat bypass hose have to be removed before you can start the task. If not already done, follow the procedures in TM 9-2320-280-20 before proceeding with this task. • General Safety Instructions: Summarizes all safety warnings for the maintenance task. If none are required, this heading will not be used. • Maintenance Level: Identifies maintenance level required to perform task. c. A step-by-step maintenance procedure follows the "INITIAL SETUP" and gives detailed instruc- tions for the procedure. These instructions give the part's general location and name and action performed. In the example for water pump - a. Removal, step 1 is: "Remove capscrew (13), lock- washer (12), and washer (11) and power steering pump bracket (10) from support bracket (9)." NOTE Warnings, cautions, and notes provide supplemental information: • Warnings - Indicate conditions, practices, or procedures which must be observed to avoid personnel injury, loss of life, or long-term health hazard. • Cautions - Indicate conditions, practices, or procedures which must be observed to avoid damage to equipment or destruction of equipment. • Notes - Include essential information of special importance, interest, or aid in job performance which should be remembered and would be otherwise difficult to find or incorporate into the text. d. At the end of a procedure, "FOLLOW-ON TASKS" will list those additional tasks that must be performed to complete the procedure. The Follow-On Tasks for water pump replacement are "Install water pump pulley (TM 9-2320-280-20), " "Install inlet hose (TM 9-2320-280-20)," "Install engine oil filter tube (TM 9-2320-280-20),"and "Install thermostat bypass hose (TM 9-2320-280-20)." 15. Refer to the example pages for para. 5-4, Water Pump and Adapter Plate Maintenance to review the following points: a. Modular Text: Both pages of text and illustrations are to be used together. This manual was designed so that the two pages would be visible at once, making part identification and procedure sequence easy to follow. b. Initial Setup: Outlines task conditions. c. Illustrations: An exploded diagram of the component shows part locations, attachments, and relationships. Cutaway views (part of the vehicle is "erased") show the location and orientation of screws and attachments. 16 . You can also use the Table of Contents (page ii) to find more information about the vehicle. 17. Refer to TM 9-2320-280-24P, Unit, Direct Support, and General Support Maintenance Repair Parts and Special Tools List for Truck, 1-1/4 ton, 4x4, M998 series when requisitioning parts, special tools, and equipment for maintenance. 18 Your manual is easy to use once you understand its design. We hope it will encourage you to use your TM more often as an aid to maintenance support for M998 series vehicles. viii