Latch Assembly

TM-5-2090-200-12P Cradle Boat 27 FT: Bridge Erection Boat NSN 2090-00-348-8138 Manual
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TM 5-2090-200-12&P Key to figure 4-3. 1. Nut 9. Screw 2. Lockwasher 10. Screw 3. Screw 11. Clamp 4. Clamp 12.Push-pull cable 5. Nut 13. Stanchion 6. Lockwasher 14. Nut 7. Screw 15. Lockwasher 8. Clamp 4-20. Latch Assembly a. Removal. (1) Disconnect the push-pull cable at the latch. (2) Remove the latch spring (21, fig. 2-5). (a ) Seat the latch hook (18) on the latch block (11), to steady the latch hook while removing spring. (b ) Remove the cotter pin (14), flat washer (15), and pin (17), from the clevis link (19) connection to the latch hook (18). (c ) Lift the link (20) and clevis link (19) to clear the latch spring (21). (d ) Compress and remove the latch spring. (3) Remove the latch hook (18). (a ) Remove the cotter pin (14), flat washer (15), and pin (17) from the latch hook (18) connection to the bracket on the dolly beam. (b ) Remove the latch hook (18). (4) Remove the latch block (11). (a ) Remove the bridge pin retainer (9), and capscrew (10), from the latch block (11). (b ) Remove the latch block (11). b. Cleaning and Inspection. (1) Inspect the latch assembly for missing or worn parts. Check the latch for cracks, breaks, or other damage. WARNING Dry cleaning solvent, P-D-680 or P-S-661, used to clean parts is potentially dangerous to personnel and property. Avoid repeated and prolonged skin contact. Do not use near open flame or excessive heat. Flash point of solvent is 100 F. -- 138 F. (38 C. -- 59 C.). (2) Clean the latch assembly with dry cleaning solvent (Fed. Spec. P-D-6801) and dry thoroughly. (3) Replace any missing or damaged parts. c. Installation. Install the latch assembly in reverse order of removal. Section VIII. MAINTENANCE OF THE ROLLER ASSEMBLY 4-21. General The boat cradle comes equipped with two roller assemblies for installation on the transporter. The boat cradle rides on the roller assemblies during launching and retrieving. There is a right hand roller assembly and a left hand. The two assemblies are identical except one is the reverse of the other. 4-22. Roller Assembly a. Removal. (1) Remove four mounting nuts (1, fig. 4-4), lockwashers (2), flat washers (3), and capscrews (4). (2) Remove the roller assembly and cap bracket (5) from the transporter. (3) Remove the cotter pin (9), nut (10), washer (11), axle (13), and washer (14). (4) Remove the roller (15) from the right hand roller bracket (16). Use the same procedure to remove the left hand roller for bracket (17). b. Cleaning and Inspection. (1) Inspect the roller assembly for worn or missing parts and excessive damage. WARNING Dry cleaning solvent, P-D-680, used to clean parts is potentially dangerous to personnel and property. Avoid repeated and prolonged skin contact. Do not use near open flame or excessive heat. Flash point of solvent is 100 F. -- 138 F. (38 C. - 59 C.). (2) Clean the roller assembly parts with a dry cleaning solvent (Fed. Spec. P-D-680) and dry thoroughly. (3) Replace any worn or missing parts. Replace an excessively damaged roller assembly. c. Installation. (1) Place the roller (15) in position in the right hand roller bracket (16) and secure with axle (13), washer (14), washer (11), nut (10) and cotter pin (9). (2) Position the roller assembly and cap bracket (5) on the transporter and secure with four mounting nuts (1), lockwashers (2), flatwashers (3), and capscrews (4). 4-9

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