TM-9-1240-401-34-P

TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

JULY 1993

TM-9-1240-401-34-P - Page 100 of 590

3-42

TM 9-1240-401-34&P

3-25. RETICLE CAGE ASSEMBLY MAINTENANCE INSTRUCTIONS (M118A2)

This task covers:

a. Removal b. Repair c. Installation

INITIAL SET-UP

Tools and Special Tools

Spanner wrench, fabricated (fig. C-6, appx C)

Tool Kit, Electronic System, Repair, Field Mainte-

nance (SC5180-95-CL-B29)

5180-01-168-0487

aterials/Parts

Grease (Item 7, appx B)

Lockwashers (8) (Item 68, appx E)

Preformed packing (2) (Item 23, appx E)

TM 9-254

M118A2 elbow telescope removed from howitzer

(TM 9-2350-311-10)

Reticle cage and cant corrector subassembly

removed from eyepiece and erector lens subas-

sembly (ref. para 3-21)

a. Removal

1

2

3

4

Remove eight cap screws (1), eight Iockwashers

(2), two access covers (3) and two preformed

packings (4) from both sides of housing (5).

card preformed packings and Iockwashers.

Remove threaded ring (6) from housing (5),

fabricated spanner wrench.

Dis-

using

Remove reticle cage assembly (7) from housing (5)

being careful not to damage wiring harness (8).

Remove machine screw (9) and clamp (10). Re-

lease wiring harness (8) from side of the reticle

cage assembly (7).

b.

Repair

1 Visually inspect for missing or damaged parts.

2 Repair or replace parts in accordance with author-

ized parts listed in appendix D.