4-40. SUSPENSION ASSEMBLY/BOGIE (CONT)
Suspension isolation valves must be closed at four corners of the platform (#1 and
#5 curbside and #1 and #5 streetside bogies) or injury to personnel may result. If
the affected bogie is one of the four corner bogies, close valve at next adjacent
Using isolation valve handle extension, isolate bogies at four corners by closing suspension isolation valves (1),
handles facing outboard from center of platform.
Loosen and remove setscrew (2) from spanner nut (3). Discard setscrew.
While installing spanner socket on spanner nut, use one person to hold spanner
socket in place or the spanner socket may fall causing injury to personnel or
damage to equipment.
Install spanner socket (4) onto spanner nut (3). Using one person, hold spanner socket (4) in place and install
torque multiplier and torque wrench.