ShoreLand'r SLB30BAL User Manual
SLB30BAL, SLB40TBAL, SLB40TBBAL, SLB46TBAL, & SLB46TBBAL
ASSEMBLY INSTRUCTIONS
IMPORTANT: All hardware for your trailer is stainless steel. It is important that you use an antiseize material on the bolt threads when assembling to prevent gauling.
Midwest Industries, Inc. Ida Grove, IA 51445 800-859-3028 www.shorelandr.com 0004297
Page 1 of 11 2/09/2011
Final Assembly Instructions
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Remove the small parts from the frame by cutting the bands. Remove the bolt bag and sort all
nuts and bolts by size.
Refer to the following pages for assembly instruction by components.
Reference: Standing at the rear of the trailer will determine the right and left side of the trailer
in the assembly instructions.
The trailer side frames and crossmembers are assembled at the manufacturer. The spring
brackets and fenders are also assembled at the manufacturer.
Tools for Assembly
Wrenches: 9/16, 3/4, 7/8, & 1 1/8
Sockets: 9/16, 3/4, 13/16. & 1 1/8
Tools for connecting brakes:
Wrenches: 7/16, 3/8, 5/8, & 12mm and also a 3/8 nut driver.
Safety Instructions
• Always wear personal protective equipment (safety glasses, gloves, etc) when
assembling and installing components.
• Inspect all fasteners regularly for deterioration and fastener tension. Refer to the
exploded part views for fastener locations
in the appropriate parts manual.
• Replace any and all components that show
deterioration due to wear or misuse before
installing or using your boat trailer.
• Never modify parts and components.
Always replace components with genuine
Shoreland’r replacement parts.
Springs
Position the axle so that it is aligned with the
trailer. Position the brake axle or axles so that the
disc brake calipers are toward the rear of the
trailer.
Place the springs on the topside of the spring
pads welded to the axle. (See chassis diagram)
The hook end of the spring must be mounted to
the rear of the trailer. Place a spring clamp on the
top center of the spring. Place the 1/2” x 6-1/2” Ubolts over the top of the spring clamp, spring and
axle. Place the spring and axle U-bolt plate onto
the ends of the two U-bolts. Secure in place with
1/2” lock nuts. Tighten enough to keep springs
and plates in place until axle /spring assembly is
in proper position.
Spring and
axle U-bolt
plate
Spring
Clam
Spring
Pad
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Page 2 of 11 2/09/2011
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Axle
Place a spring bracket bushing (Ref #25) into the rear of the spring bracket and secure with a
9/16” x 3 1/4” hex bolt and hex lock nut. Repeat in other spring bracket. Position the axle under
the frame, hook the hook loop of the spring around the bushings just installed. Note: If the axle
is positioned too low, the hooks will not hook around the bushings.
Raise the front of the springs up so they align with the front hole of the spring bracket. Secure
in place with 9/16” x 3-1/4” hex bolts and lock nuts.
Tighten all axle U-bolts and spring bolts.
9/16” X 3 1/4” Hex
Bolt & Lock Nut
Spring
Bracket
Bushing
TANDEM AXLE
ROCKER ARMS
Locate the rocker arms. Note: Center bushing has a grease zerk in it. Position the rocker
arms up into the center channel
welded in the center of the
tandem spring bracket so that the
3/4” X 4 1/2” Hex
Bolt & Lock Nut
grease zerk is pointing down.
Align the holes in the channel with
Spring Bracket Bushin
the rocker arm. Secure with a 3/4” x
4-1/2” hex bolt and lock nut. Tighten.
Repeat this process on the other
rocker arm and spring bracket.
Grease the rocker, apply grease
through the zerk.
NOTE: The grease zerk is
positioned down so that it is
accessible for servicing.
Grease Zerk
Midwest Industries, Inc. Ida Grove, IA 51445 800-859-3028 www.shorelandr.com 0004297
Page 3 of 11 2/09/2011
AXLE
Place one of the spring bracket bushings (Ref. #35) into the rear of the spring bracket and
secure with a 9/16” x 3 1/4” hex bolt and hex lock nut. Repeat in other spring bracket.
Position the rear axle under the frame, then hook the hook loop of the spring around the
bushings just installed. If the axle is positioned too low, the hooks will not hook around the
bushings.
Raise the front of the springs up so they align with the rear hole in the axle rocker arm. Secure
in place with a 9/16” x
3-1/4” hex bolts and lock nuts.
Install another spring bracket bushing in the front hole on the rock arm assembly. Secure with
a 9/16” x 3-1/4” hex bolt and lock nut. Tighten.
Hook the hook end of the springs mounted to the front axle over the bushing in the rocker arm
assembly. Swing the front of the spring up and attach the front mounting hole in the spring
bracket with another 9/16” x 3-1/4” hex bolt and lock nut.
Tighten all axle U-bolts and spring bolts.
Tongue
Remove the tongue from it’s shipping position, reverse it and re-insert it into the front of the
tongue channel. Align the
holes in the tongue with
the holes in the tongue
channel. Secure with a 1/2”
x 4 1/4” hex bolt and 1/2”
lock nut in the front cross
hole. Remove the wire
harness from the rear of
the tongue. Place the wire
harness and the brake line
through the hole in the
tongue cover plate. Secure
the tongue cover plate in
position with a 1/2” x 1-1/2”
hex bolt and 1/2” lock nut.
Tighten. Plug the tongue
wire harness ends into the
1/2” X 4 1/4”
Hex Bolt
frame harnesses by
matching colors and ends.
Push the extra wire into the
rear of the tongue.
1/2” X 1 1/2”
Hex Bolt
Midwest Industries, Inc. Ida Grove, IA 51445 800-859-3028 www.shorelandr.com 0004297
Page 4 of 11 2/09/2011
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