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Reference for continuing updates.
Parts Listing
SP Special Order ◆ Not Serviced by Dayton Parts Product Illustration/Photo Follows Popular Most Popular
Mack
Mack SS50 Camelback
(4" Spring, 4" Bronze Center)
Rear Suspension
Key
No.
Part
Number Description
No.
Req.
OEM
Reference Remarks
1 ◆ Spindle 1 85QK349 Repl. by 85QK355
✔ ● 2 338-1845 Assembly, Trunnion 2 39QK325 Cast No. 39QK54
✔✔ ● 3 334-545 Fitting, Pressure Relief; ¹⁄₈"-27 NPT, 5 PSI 2 44AX52
✔ 4 322-113 Bushing; 4"ID x 4 ¹⁄₄"OD x 4 ¹⁄₄"Lg 4 10QK158A,
10QK153,392
Bronze
✔✔ ● 5 334-511 Washer, Thrust; 4 ¹⁄₃₂"ID x 6 ¹³⁄₁₆ "OD x ¹⁄₄"Thk 4 43QK115 Bronze
✔ ● 6 334-512 Washer, Thrust; 4 ¹⁄₃₂"ID x 6 ¹⁄₄"OD x ⁵⁄₁₆"Thk 2 43QK118 Thrust Type
✔✔ ● 7 334-515 Seal; 5"ID X 6 ³⁄₈"OD x ⁹⁄₁₆"Thk 2 88AX253, 88AX459
8 ◆ Seal, Collar; Trunnion; 4"ID x 5"OD 2 8QD312
● 9 334-498 Nut, Trunnion Shaft; 3 ⁷⁄₈"-12 x 6.09"OD x
1.18"Thk
2 25QJ220BP2 Replaces Old Style
● 10 334-1401 Assembly, Bolt; ¹⁄₂"-20 x 2 ³⁄₄"SHCS 2 3AX1472, 21AX798 Incl. Bolt & 12-Point Flanged Lock Nut
11 ◆ Retainer Plate/Adjusting Nut; Steel Cap;
5 ¹⁵⁄₁₆"OD x ¹⁄₂"Thk w/4 ⁵⁄₈" Bolt Holes
2 22QS257
12 334-1548 Cap, Trunnion; 2 ⁵⁄₈" Deep 2 97QL3101 Discontinued
13 334-582 Assembly, Bolt; ⁵⁄₁₆"-24 x 1"Lg 12 1AX114 Incl. Bolt & Lock Washer
✔ ● 14 338-746 Box, Insulator; 6 ³⁄₄" Deep 4 52QK418BP4
✔✔ ● 15 325-110 Insulator; Standard; 1 ³⁄₄" Dowel; 70
Durometer
4 10QK36B 70 Durometer, Rubber; Black
● 325-123 Insulator, Urethane; Severe Service; 1 ³⁄₄"
Dowel
4 10QK388 90 Durometer, Urethane; Yellow
✔✔ ● 16 338-729 Spacer; 3"W x 4"Lg x 1 ¹⁄₂"Thk 8 13QK246 For Insulator Box
✔✔ ● 17 325-113 Insulator; 1 ³⁄₄" Dowel; 70 Durometer 4 10QK370 70 Durometer, Rubber; Black
● 325-113U Insulator, Urethane 4
✔✔ ● 325-112 Insulator; 1 ³⁄₄" Dowel, 70 Durometer 4 10QK365A 70 Durometer, Rubber; Black
✔✔ ● 325-112U Insulator, Urethane 4
18 See Charts Bolt, Insulator Box; ⁷⁄₈"-14 Thread 12 See Chart on Page 1048
19 SLN-106 Nut, Lock; ⁷⁄₈"-14 12
✔✔ 20 334-150 Washer, Hard Flat; ⁷⁄₈" 12
21 See Charts Screw, Cap; Insulator Box; ⁷⁄₈"-9 Thread 4 See Chart on Page 1048
● 22 338-714 Saddle, U-Bolt; 9 ³⁄₄"Lg x 4"W 2 8QK335P2
23 See Charts Assembly, U-Bolt; Square or Semi-Round 4 Use Square Bend U-Bolts w/Jack Plate; Use
Semi-Round Bend U-Bolts w/Cast Top Plate;
See Chart on Page 1051
24 SUW-125 Washer, U-Bolt; 1 ¹⁄₄" 8 35AX1435
25 DN-125 Nut, Deep; 1 ¹⁄₄"-12, Grade C 8 21AX131
DNM-200 Nut, Deep, 1 ¹⁄₄"-12, Grade C 8 21AX655
26 345-808 Kit, Uni-Rod 2 17QF422-XX Mack 1 ⁷⁄₈" Taper Pin Both Ends
27 Spring Assembly Assembly, Spring 2 See Leaf Spring Web Catalog for Details