Chapter 1. INTRODUCTION

TM 55-1730-202-14

CHAPTER 1

INTRODUCTION

Section I. GENERAL

1. SCOPE.

c. Reporting of Improvements. Report of errors,

omissions, and recommendations for improving this

a. These instructions are published for the

publication by the individual user is encouraged.

use of operating and maintenance personnel to

Reports should be submitted on DA Form 2028

w h o m the tripod hydraulic jack is assign-

(Recommended Changes to Publications) and for-

e d They contain i n f o r m a t i o n on operation,

ward directly to Commander, US Army Aviation

lubrication, detailed preventive maintenance, ser-

Systems Command, ATTN: AMSAV-MC, 4300

vicing, and maintenance of the equipment, its ac-

Goodfellow Blvd., St. Louis, Missouri 63120-1798.

cessories and auxiliaries. Perservation, packing,

shipping, and storing procedures are also provid-

ed. No special tools or equipment are required to

perform organizational, d i r e c t s u p p o r t , a n d

g e n e r a l support maintenance of this tripod

2. EQUIPMENT RECORDS.

hydraulic jack. Also included is the applicable

repair parts and special tools list (Appendix C).

The Army equipment record system and pro-

cedures established in DA PAM 738-751 apply

b. Appendix A provides a standard list of all

to this equipment. The applicable forms as re-

publications applicable to this manual. Appen-

quired by DA PAM 738-751 shall be used.

dix B consists of the Maintenance Allocation

Chart.

Section II. DESCRIPTION AND DATA

3. DESCRIPTION.

of the cylinder and ram assembly. It indicates the

amount of rise in inches. Air vent and capacity

decalcomanias are located on the top side of the pump

The tripod hydraulic jack consists of a pump assembly

assembly (13).

(13, figure 1), a cylinder and ram assembly (5), and the

supporting tripod assembly. The foot assemblies (12 are

5. TABULATED DATA.

fitted with spring loaded casters. When under load, the

casters are depressed and the jack rests firmly on three

feet. The purpose of the jack is to provide up to 5 tons

Load capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5 tons

of lifting effort through a range of 239/16 inches collapsed

Collapsed height . . . . . . . . . . . . . . . . . . .239/16 in. (inch)

to approximately 759/16 inches fully extended.

Maximum extended height . . . . . . . . . . . . . . . . 759/16 in.

Hydraulic ram travel . . . . . . . . . . . . . . . . . . . . . ..16 in.

Ram screw extension . . . . . . . . . . . . . . . . . . . . . ..12 in.

4. IDENTIFICATION.

Leg extension lengths . . . . . . . . . . . . . . . . . . . . ..12 in.

Working pressure . . . . . . . . . . . . 1750 psi (pounds per

The tripod hydraulic jack has a nameplate mounted on

square inch)

the upper end of the cylinder and ram assembly (5, fig-

Pump reservoir capacity . . . . . . . . . . . 0.8 gal. (gallon)

Total weight . . . . . . . . . . . . . . . . . . . . . . . 188 lb. (pound)

ure 1). A rise indicator decalcomania is located on the side

Change 6