Figure 4-34. Chain Feed Sprocket
4-13.3 Chain Pulldown Yoke (Figure 4-34A).
4-13.3.1 Disassembly.
a.
Remove the two hex head bolts (1), nuts (2), and lockwashers (3) to remove the chain guide (4). To separate the
chain from the yoke, remove the long bolts (5), nuts (2), and lockwashers (3) from each side of the yoke.
Separate the chain links (6) and chain connectors (7) from the chain (8).
b.
From either side of the pulldown yoke, remove two bolts (9), nuts (2), and lockwashers (3) to disassemble the
yoke guides (10 and 11), yoke adjusting shims (12) and yoke guide shims (13). Line guide (14) may also be
removed at this time. Remove the safety chain (15) and hose clamp (16). Complete the disassembly procedure
by removing the yoke bushings (17) from the yoke (18).
4-13.3.2 Cleaning, Inspection, and Repair.
a.
Clean all parts using an approved cleaning solvent. Remove any rust or corrosion with a wire brush.
b.
Inspect all parts for signs of wear or evidence of corrosion or rust. Inspect bushings for signs of wear or pitting.
Inspect chain for wear or damaged links; also, check chain for free link movement. Check threaded parts for
stripped or damaged threads.
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