Assembly and disassembly of the Catwalk

CHAPTER 1 INTRODUCTION - TM-5-3815-228-12P_3

Figure 2. Assembling the Three Catwalk Sections

TM-5-3815-228-12P CATWALK Pile Driver Lead NSN 3815-479 MILITEC Defense Systems-Model M148 Manual
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TM 5-3815-228-12&P CHAPTER 2 CATWALK M-146 ASSEMBLY - DISASSEMBLY INSTRUCTIONS This task covers: Assembly and disassembly of the Catwalk Initial Setup: Equipment Conditions Tools and Special Tools Crane located 16 to 24 feet from pile driver. General mechanics tool kit SC 5180-90-N26. Catwalk components removed from shipping crate. Personal Required - Two NOTE The following assembly instructions are guidelines for an ideal assembly environment. Actual assembly may vary according to time available, weather conditions, terrain, and available personnel. WARNING In some unusual terrain or climate conditions it may be safer to assemble the Cat- walk on the ground and lift it into place with a crane. ASSEMBLY 1. Install the First Outer Section. Position or attach one of the Catwalk Outer Sections (13229E-5624) to the pile driver lead and place a vertical support underneath the other end (see Figure 2). 2. Install the Inner Section. Slide the Catwalk Inner Section (13229E-5623) into the positioned Catwalk Outer Section (13229E-5624) and place a suitable vertical support underneath the end. To maintain alignment, of the two sections, temporarily insert Pin M146- 101, (1/2" diameter x 26" long), thru the 5/8 hole in the Catwalk Outer Section and thru the aligned pipe channel in the Catwalk Inner Section. 4. Install the SecondOuter Section. Move the vertical support out of the way and slide the other Catwalk Outer Section (13229E-5624) into the Catwalk Inner Section. Install the vertical support under the end of the Catwalk Inner Section. 5. Adjusting the Catwalk Sections to Obtain Approximate Length. Remove Pin installed in Step 3. Slide or adjust the Catwalk Outer Sections (13229E-5624) into the Inner Section (13229E-5623) so that Catwalk length spans the distance between the crane and the lead. 6. Adjusting the Catwalk Sections to Obtain Final Length. Make the final adjustment by sliding Catwalk Outer Sections (13229E-5624) into the Catwalk Inner Section (13229E- 5623) so that the nearest 5/8 hole aligns with a pipe channel in the Catwalk Inner Section. Position ends on crane and attaches. 7. Installing Pins and Fastening Hardware. Insert Pin (M146-101) thru the 5/8 hole in either one of the Catwalk Outer Sections (13229E-5624) and thru the aligned pipe channel in the Catwalk Inner Section (13229E-5623). Install Clip (#16) thru hole in end of Pin to secure. Repeat for other Outer Section (13229E-5624). Complete the assembly by installing (4) 1/2-13 x 2" Ig. screws, (4) 1/2 "Lock washers, and (4) 1/2-13 Nuts thru the aligned 9/16 holes adjacent to pipe channels in Catwalk Inner Section (13229E-5623) with the aligned 5/8 holes in the Catwalk Outer Section (13229E-5624). Screws are installed from the inside of the Sections. (See section view in Figure 1). 2-1

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