These sets enable one-man installation of front and rear countershaft bearings on Fuller twin-countershaft transmissions. The set positions the upper countershaft, yet lets you slide it aside to insert the main shaft. When the mian shaft is in place and timing marks lined up, turn the tool vertically to engage and position the countershaft to the main shaft.

• Timing block set for Fuller RT and RTO 910, 915, 9513, 12509, 12510, 12513 and 12515 transmissions.
• Weight 1 lbs., 12 oz.