1001
Reference
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Parts Listing
SP
Special Order
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Watson & Chalin
Watson & Chalin
Straddlemount
Trailer Single Point Suspension
Key
No.
Part
Number
Description
No.
Req.
OEM
Reference
Remarks
1
334-1482
Shaft; 54
¹⁄₂
"Lg
1 SP-0120
2
321-348
Bushing; 4"ID x 4.95"OD x 8.75"Lg
2 SP-0225
●
3
338-1353
Saddle, U-Bolt; Round
2 SP-0003
Overslung
●
338-424
Trunnion, Upper Half
2 SP-0177
Underslung
✔✔ ●
4
338-1350
Seat, Trunnion
2 SP-0001
✔✔ ●
5
338-1351
Cap, Trunnion
2 SP-0006
Overslung
●
338-420
Plate, Clamp; U-Bolt
2 SP-0171
Underslung
✔
6
361-565
Kit, U-Bolt; Round Bend, Grade 8
4 SP-0023K
Overslung; 1
¹⁄₈
" x 5
¹¹⁄₁₆
" x 14" R
361-496
Kit, U-Bolt; Round Bend, Grade 8
4
Underslung; 1
¹⁄₈
" x 5
⁷⁄₈
" x 15
¹⁄₂
" R
361-573
Kit, U-Bolt; Round Bend, Grade 8
4
Overslung; 1
¹⁄₈
" x 5
¹¹⁄₁₆
" x 16
¹⁄₂
" R
✔✔ ●
7
338-1117
Cap, End
4 SP-0015
PP Series; Overslung Ends
✔✔ ●
338-1348
Cap, End; Spring; 2 Main Spring
4 SP-0016
HD & LW; Overslung Ends
✔✔ ●
338-1349
Cap, End; Spring; 3 Main Spring
4 SP-0007
HD & LW; Overslung Ends
●
338-1355
Cap, End; Spring; 5" Round Axles
4
HD; Underslung Ends
✔ ●
338-1354
Cap, End; Spring; 5" Round Axles
4 SP-0013
HD; Underslung Ends
●
8
338-1119
Seat; 5" Square Axles
4 SP-0014
PP Series; Overslung Ends
338-1382
Seat
4 SP-0092
✔✔ ●
338-1363
Seat; 5" Round Axles
4 SP-0036
HD & LW; Overslung Ends
●
338-1556
Seat; 5" Square Axles
4 SP-0048
HD & LW; Overslung Ends
●
338-1810
Seat; 5" Round Axles
4 SP-0092
PP Series; Overslung Ends
✔✔ ●
9
338-1818
Pad, Seat Repair; Cast
4
HD & LW; Overslung Ends
✔✔ ●
338-876
Pad, Seat Repair; Fabricated
4 SP-0082
HD & LW; Overslung Ends
✔ ●
338-1557
Pad, End
4 SP-0029
HD; Underslung Ends
✔✔ ●
338-1118
Plate, Locator
4 SP-0043, SP-0051 PP Series; Overslung Ends
●
10
334-1111
Plate, Spacer; 1
¹¹⁄₁₆
" x 9
¹⁄₂
" X
⁵⁄₃₂
"Thk
8 SP-0083
(4)
¹³⁄₁₆
" Dia. Holes
●
11
325-151U
Pad, Urethane; 1" x 4
³⁄₈
" x 7
⁵⁄₈
"
4
PP Series
●
325-142U
Pad, Urethane; 4
⁵⁄₈
"W x 5
¹⁄₄
"Lg x
¹³⁄₁₆
"Thk
4 SP-0193
HD & LW
12
361-516
Kit, U-Bolt; Round Bend, Grade 8
8
HD; Underslung; 1" x 5
¹⁄₈
" x 12
⁷⁄₈
" R
361-531
Kit, U-Bolt; Round Bend, Grade 8
8 SP-0094K
PP Series; Overslung; 1
¹⁄₈
" x 5
¹⁄₈
" x 12
³⁄₈
" R
✔
361-338
Kit, U-Bolt; Square Bend, Forged Top, Grade 8 8 SP-0026K
PP Series; Overslung; 1
¹⁄₈
" x 5
¹⁄₈
" x 13
¹⁄₂
" S
✔✔
361-240
Kit, U-Bolt; Round Bend, Grade 8
8 SP-0021K
HD & LW; Overslung;
⁵⁄₈
" x 5
¹⁄₈
" x 8
¹⁄₈
" R
361-244
Kit, U-Bolt; Square Bend, Grade 8
8 SP-0052K
HD & LW; Overslung;
⁵⁄₈
" x 5
¹⁄₈
" x 9
³⁄₈
" S
✔✔
13
334-1110
Assembly, Bolt;
³⁄₄
"-10 x 2
¹⁄₂
"Lg
8
Incl. Bolt & Hdwe.
✔
14
334-622
Assembly, Bolt;
⁵⁄₈
"-18 x 2"Lg
16
Incl. Bolt & Hdwe.
15
Spring Assembly
Assembly, Spring
2
See Leaf Spring Web Catalog for Details