"Drift the spider across the yoke" (I'm not making this
up). As near as I can tell a drift is a hammer, and a spider
is a punch. A yoke seems to be a U-joint, or part of a U-joint.
Off by one. A drift is a punch, a spider is a U joint, and a yoke is a yoke
(1g):
1yoke \'yo^-k\ n, pl yokes
[ME yok, fr. OE geoc; akin to OHG joh yoke, L jugum, Gk zygon,
Skt yuga, L jungere to join]
(bef. 12c)
1a: a wooden bar or frame by which two draft animals (as oxen) are
joined at the heads or necks for working together
1b: an arched device formerly laid on the neck of a defeated person
1c: a frame fitted to a person's shoulders to carry a load in two equal
portions
1d: a bar by which the end of the tongue of a wagon or carriage is
suspended from the collars of the harness
1e (1): a crosspiece on the head of a boat's rudder
1e (2): an airplane lever operating the elevators and the ailerons
1f: a frame from which a bell is hung
1g: a clamp or similar piece that embraces two parts to hold or unite
them in position
2 pl usu yoke: two animals yoked or worked together
(You're lucky, it could also have been called a trunnion!) So, you're
supposed to use a punch to drive the U joint into place in the yoke of
the drive shaft.
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