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Figure 9-4. Lower Block Assembly.
“B” Frame: Lower Block Components for Figure 9-4.
Ref.
No.
Part
Number Description
Qty.
Req’d
GHB-400Y Lower Block Assembly (Includes Ref. Nos. 1-17) 1
1 GHB-401 Lower Block Frame – Hook Beam 1
2 GHB-402 Hook 1
3 GHB-403 Thrust Bearing 1
4 GHB-404 Castle Nut 1
5 GHB-405 Spring Pin 1
6 GHB-406Y Sheave Covers - Yellow 4
7 GHB-407 Flat Head Socket Cap Screws (1/4-20 x 1/2) 4
8 GHB-408 Sheave Pin 1
9 GHB-409 Sheaves 2
10 GHB-410 Ball Bearings 2
11 GHB-411 Internal Retaining Rings 2
12 GHB-412 External Retaining Rings 2
13 GHB-413 Socket Head Cap Screws (1/4-20 x 2 3/4 Long) 8
14 GHB-414 Hi-Collar Lockwashers (1/4) 8
15 GHB-415 Self-Locking Nuts (1/4-20) 8
16 GHB-416 Capacity Plates 2
17 GHB-417 Hex Washer Head Self-Tapping Screws (5/16-18 x 1 1/2) 4
“C” Frame: Lower Block Components for Figure 9-4.
Ref.
No.
Part
Number Description
Qty.
Req’d
GHC-400Y10 10t Lower Block Assembly (Includes Ref. Nos. 1-17) 1
GHC-400Y7.5 7 1/2t Lower Block Assembly (Includes Ref. Nos. 1-17) 1
1 GHC-401 Lower Block Frame – Hook Beam 1
2 GHC-402 Hook 1
3 GHC-403 Thrust Bearing 1
4 GHC-404 Castle Nut 1
5 GHC-405 Spring Pin 1
6 GHC-406Y Sheave Covers 4